[{"date_created":"2019-11-19T13:01:31Z","intvolume":" 98","author":[{"first_name":"Kimberly A","last_name":"Modic","full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"full_name":"Shekhter, A.","first_name":"A.","last_name":"Shekhter"},{"full_name":"Varma, C. M.","first_name":"C. M.","last_name":"Varma"}],"publication_status":"published","month":"11","_id":"7058","year":"2018","type":"journal_article","article_number":"205110 ","publisher":"APS","quality_controlled":"1","date_updated":"2021-01-12T08:11:36Z","abstract":[{"lang":"eng","text":"We examine recent magnetic torque measurements in two compounds, γ−Li2IrO3 and RuCl3, which have been discussed as possible realizations of the Kitaev model. The analysis of the reported discontinuity in torque, as an external magnetic field is rotated across the c axis in both crystals, suggests that they have a translationally invariant chiral spin order of the form ⟨Si⋅(Sj×Sk)⟩≠0 in the ground state and persisting over a very wide range of magnetic field and temperature. An extraordinary |B|B2 dependence of the torque for small fields, beside the usual B2 part, is predicted by the chiral spin order. Data for small fields are available for γ−Li2IrO3 and are found to be consistent with the prediction upon further analysis. Other experiments such as inelastic scattering and thermal Hall effect and several questions raised by the discovery of chiral spin order, including its topological consequences, are discussed."}],"volume":98,"citation":{"ista":"Modic KA, Ramshaw BJ, Shekhter A, Varma CM. 2018. Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. 98(20), 205110.","short":"K.A. Modic, B.J. Ramshaw, A. Shekhter, C.M. Varma, Physical Review B 98 (2018).","ama":"Modic KA, Ramshaw BJ, Shekhter A, Varma CM. Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. 2018;98(20). doi:10.1103/physrevb.98.205110","chicago":"Modic, Kimberly A, B. J. Ramshaw, A. Shekhter, and C. M. Varma. “Chiral Spin Order in Some Purported Kitaev Spin-Liquid Compounds.” Physical Review B. APS, 2018. https://doi.org/10.1103/physrevb.98.205110.","ieee":"K. A. Modic, B. J. Ramshaw, A. Shekhter, and C. M. Varma, “Chiral spin order in some purported Kitaev spin-liquid compounds,” Physical Review B, vol. 98, no. 20. APS, 2018.","apa":"Modic, K. A., Ramshaw, B. J., Shekhter, A., & Varma, C. M. (2018). Chiral spin order in some purported Kitaev spin-liquid compounds. Physical Review B. APS. https://doi.org/10.1103/physrevb.98.205110","mla":"Modic, Kimberly A., et al. “Chiral Spin Order in Some Purported Kitaev Spin-Liquid Compounds.” Physical Review B, vol. 98, no. 20, 205110, APS, 2018, doi:10.1103/physrevb.98.205110."},"status":"public","article_type":"original","date_published":"2018-11-05T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","title":"Chiral spin order in some purported Kitaev spin-liquid compounds","arxiv":1,"publication":"Physical Review B","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://arxiv.org/abs/1807.06637","open_access":"1"}],"oa_version":"Preprint","extern":"1","doi":"10.1103/physrevb.98.205110","external_id":{"arxiv":["1807.06637"]},"issue":"20","publication_identifier":{"eissn":["2469-9969"],"issn":["2469-9950"]},"oa":1,"day":"05"},{"type":"journal_article","year":"2018","_id":"7059","intvolume":" 9","date_created":"2019-11-19T13:02:20Z","publication_status":"published","month":"09","author":[{"full_name":"Modic, Kimberly A","first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"full_name":"Bachmann, Maja D.","first_name":"Maja D.","last_name":"Bachmann"},{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"full_name":"Arnold, F.","last_name":"Arnold","first_name":"F."},{"first_name":"K. R.","last_name":"Shirer","full_name":"Shirer, K. R."},{"last_name":"Estry","first_name":"Amelia","full_name":"Estry, Amelia"},{"first_name":"J. B.","last_name":"Betts","full_name":"Betts, J. B."},{"full_name":"Ghimire, Nirmal J.","first_name":"Nirmal J.","last_name":"Ghimire"},{"full_name":"Bauer, E. D.","first_name":"E. D.","last_name":"Bauer"},{"full_name":"Schmidt, Marcus","first_name":"Marcus","last_name":"Schmidt"},{"full_name":"Baenitz, Michael","first_name":"Michael","last_name":"Baenitz"},{"full_name":"Svanidze, E.","first_name":"E.","last_name":"Svanidze"},{"first_name":"Ross D.","last_name":"McDonald","full_name":"McDonald, Ross D."},{"full_name":"Shekhter, Arkady","first_name":"Arkady","last_name":"Shekhter"},{"first_name":"Philip J. W.","last_name":"Moll","full_name":"Moll, Philip J. W."}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2021-01-12T08:11:37Z","abstract":[{"text":"Unusual behavior in quantum materials commonly arises from their effective low-dimensional physics, reflecting the underlying anisotropy in the spin and charge degrees of freedom. Here we introduce the magnetotropic coefficient k = ∂2F/∂θ2, the second derivative of the free energy F with respect to the magnetic field orientation θ in the crystal. We show that the magnetotropic coefficient can be quantitatively determined from a shift in the resonant frequency of a commercially available atomic force microscopy cantilever under magnetic field. This detection method enables part per 100 million sensitivity and the ability to measure magnetic anisotropy in nanogram-scale samples, as demonstrated on the Weyl semimetal NbP. Measurement of the magnetotropic coefficient in the spin-liquid candidate RuCl3 highlights its sensitivity to anisotropic phase transitions and allows a quantitative comparison to other thermodynamic coefficients via the Ehrenfest relations.","lang":"eng"}],"has_accepted_license":"1","quality_controlled":"1","citation":{"ista":"Modic KA, Bachmann MD, Ramshaw BJ, Arnold F, Shirer KR, Estry A, Betts JB, Ghimire NJ, Bauer ED, Schmidt M, Baenitz M, Svanidze E, McDonald RD, Shekhter A, Moll PJW. 2018. Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. 9(1), 3975.","apa":"Modic, K. A., Bachmann, M. D., Ramshaw, B. J., Arnold, F., Shirer, K. R., Estry, A., … Moll, P. J. W. (2018). Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-018-06412-w","mla":"Modic, Kimberly A., et al. “Resonant Torsion Magnetometry in Anisotropic Quantum Materials.” Nature Communications, vol. 9, no. 1, Springer Nature, 2018, p. 3975, doi:10.1038/s41467-018-06412-w.","ieee":"K. A. Modic et al., “Resonant torsion magnetometry in anisotropic quantum materials,” Nature Communications, vol. 9, no. 1. Springer Nature, p. 3975, 2018.","ama":"Modic KA, Bachmann MD, Ramshaw BJ, et al. Resonant torsion magnetometry in anisotropic quantum materials. Nature Communications. 2018;9(1):3975. doi:10.1038/s41467-018-06412-w","short":"K.A. Modic, M.D. Bachmann, B.J. Ramshaw, F. Arnold, K.R. Shirer, A. Estry, J.B. Betts, N.J. Ghimire, E.D. Bauer, M. Schmidt, M. Baenitz, E. Svanidze, R.D. McDonald, A. Shekhter, P.J.W. Moll, Nature Communications 9 (2018) 3975.","chicago":"Modic, Kimberly A, Maja D. Bachmann, B. J. Ramshaw, F. Arnold, K. R. Shirer, Amelia Estry, J. B. Betts, et al. “Resonant Torsion Magnetometry in Anisotropic Quantum Materials.” Nature Communications. Springer Nature, 2018. https://doi.org/10.1038/s41467-018-06412-w."},"volume":9,"page":"3975","publisher":"Springer Nature","publication":"Nature Communications","language":[{"iso":"eng"}],"title":"Resonant torsion magnetometry in anisotropic quantum materials","article_processing_charge":"No","file_date_updated":"2020-07-14T12:47:48Z","status":"public","ddc":["530"],"date_published":"2018-09-28T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","oa":1,"day":"28","extern":"1","oa_version":"Published Version","doi":"10.1038/s41467-018-06412-w","file":[{"creator":"dernst","date_created":"2019-11-20T12:48:58Z","file_size":1257681,"file_name":"2018_NatureComm_Modic.pdf","content_type":"application/pdf","relation":"main_file","date_updated":"2020-07-14T12:47:48Z","access_level":"open_access","checksum":"46a313c816e66899d4dad2cf3583e5b0","file_id":"7088"}],"publication_identifier":{"issn":["2041-1723"]},"issue":"1"},{"issue":"6401","publication_identifier":{"issn":["0036-8075"],"eissn":["1095-9203"]},"doi":"10.1126/science.aan3178","oa_version":"None","publisher":"AAAS","extern":"1","day":"03","page":"479-481","volume":361,"citation":{"ista":"Giraldo-Gallo P, Galvis JA, Stegen Z, Modic KA, Balakirev FF, Betts JB, Lian X, Moir C, Riggs SC, Wu J, Bollinger AT, He X, Božović I, Ramshaw BJ, McDonald RD, Boebinger GS, Shekhter A. 2018. Scale-invariant magnetoresistance in a cuprate superconductor. Science. 361(6401), 479–481.","short":"P. Giraldo-Gallo, J.A. Galvis, Z. Stegen, K.A. Modic, F.F. Balakirev, J.B. Betts, X. Lian, C. Moir, S.C. Riggs, J. Wu, A.T. Bollinger, X. He, I. Božović, B.J. Ramshaw, R.D. McDonald, G.S. Boebinger, A. Shekhter, Science 361 (2018) 479–481.","chicago":"Giraldo-Gallo, P., J. A. Galvis, Z. Stegen, Kimberly A Modic, F. F. Balakirev, J. B. Betts, X. Lian, et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.” Science. AAAS, 2018. https://doi.org/10.1126/science.aan3178.","ama":"Giraldo-Gallo P, Galvis JA, Stegen Z, et al. Scale-invariant magnetoresistance in a cuprate superconductor. Science. 2018;361(6401):479-481. doi:10.1126/science.aan3178","ieee":"P. Giraldo-Gallo et al., “Scale-invariant magnetoresistance in a cuprate superconductor,” Science, vol. 361, no. 6401. AAAS, pp. 479–481, 2018.","mla":"Giraldo-Gallo, P., et al. “Scale-Invariant Magnetoresistance in a Cuprate Superconductor.” Science, vol. 361, no. 6401, AAAS, 2018, pp. 479–81, doi:10.1126/science.aan3178.","apa":"Giraldo-Gallo, P., Galvis, J. A., Stegen, Z., Modic, K. A., Balakirev, F. F., Betts, J. B., … Shekhter, A. (2018). Scale-invariant magnetoresistance in a cuprate superconductor. Science. AAAS. https://doi.org/10.1126/science.aan3178"},"quality_controlled":"1","abstract":[{"lang":"eng","text":"The anomalous metallic state in the high-temperature superconducting cuprates is masked by superconductivity near a quantum critical point. Applying high magnetic fields to suppress superconductivity has enabled detailed studies of the normal state, yet the direct effect of strong magnetic fields on the metallic state is poorly understood. We report the high-field magnetoresistance of thin-film La2–xSrxCuO4 cuprate in the vicinity of the critical doping, 0.161 ≤ p ≤ 0.190. We find that the metallic state exposed by suppressing superconductivity is characterized by magnetoresistance that is linear in magnetic fields up to 80 tesla. The magnitude of the linear-in-field resistivity mirrors the magnitude and doping evolution of the well-known linear-in-temperature resistivity that has been associated with quantum criticality in high-temperature superconductors."}],"date_updated":"2021-01-12T08:11:37Z","author":[{"first_name":"P.","last_name":"Giraldo-Gallo","full_name":"Giraldo-Gallo, P."},{"first_name":"J. A.","last_name":"Galvis","full_name":"Galvis, J. A."},{"full_name":"Stegen, Z.","first_name":"Z.","last_name":"Stegen"},{"last_name":"Modic","first_name":"Kimberly A","full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"last_name":"Balakirev","first_name":"F. F.","full_name":"Balakirev, F. F."},{"full_name":"Betts, J. B.","last_name":"Betts","first_name":"J. B."},{"full_name":"Lian, X.","last_name":"Lian","first_name":"X."},{"first_name":"C.","last_name":"Moir","full_name":"Moir, C."},{"full_name":"Riggs, S. C.","last_name":"Riggs","first_name":"S. C."},{"last_name":"Wu","first_name":"J.","full_name":"Wu, J."},{"full_name":"Bollinger, A. T.","first_name":"A. T.","last_name":"Bollinger"},{"full_name":"He, X.","last_name":"He","first_name":"X."},{"first_name":"I.","last_name":"Božović","full_name":"Božović, I."},{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"first_name":"R. D.","last_name":"McDonald","full_name":"McDonald, R. D."},{"full_name":"Boebinger, G. S.","last_name":"Boebinger","first_name":"G. S."},{"full_name":"Shekhter, A.","last_name":"Shekhter","first_name":"A."}],"article_type":"original","month":"08","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2018-08-03T00:00:00Z","publication_status":"published","date_created":"2019-11-19T13:03:16Z","intvolume":" 361","status":"public","_id":"7060","year":"2018","type":"journal_article","article_processing_charge":"No","title":"Scale-invariant magnetoresistance in a cuprate superconductor","language":[{"iso":"eng"}],"publication":"Science"},{"extern":"1","oa_version":"Published Version","doi":"10.1038/s41467-018-04542-9","file":[{"file_name":"2018_NatureComm_Ramshaw.pdf","date_updated":"2020-07-14T12:47:48Z","access_level":"open_access","checksum":"9c53f9a1f06a4d83d5fe879d2478b7d7","file_id":"7089","relation":"main_file","content_type":"application/pdf","creator":"dernst","file_size":1794797,"date_created":"2019-11-20T13:55:44Z"}],"publication_identifier":{"issn":["2041-1723"]},"issue":"1","oa":1,"day":"07","status":"public","ddc":["530"],"date_published":"2018-06-07T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","publication":"Nature Communications","language":[{"iso":"eng"}],"article_processing_charge":"No","title":"Quantum limit transport and destruction of the Weyl nodes in TaAs","file_date_updated":"2020-07-14T12:47:48Z","publisher":"Springer Nature","date_updated":"2021-01-12T08:11:38Z","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"lang":"eng","text":"Weyl fermions are a recently discovered ingredient for correlated states of electronic matter. A key difficulty has been that real materials also contain non-Weyl quasiparticles, and disentangling the experimental signatures has proven challenging. Here we use magnetic fields up to 95 T to drive the Weyl semimetal TaAs far into its quantum limit, where only the purely chiral 0th Landau levels of the Weyl fermions are occupied. We find the electrical resistivity to be nearly independent of magnetic field up to 50 T: unusual for conventional metals but consistent with the chiral anomaly for Weyl fermions. Above 50 T we observe a two-order-of-magnitude increase in resistivity, indicating that a gap opens in the chiral Landau levels. Above 80 T we observe strong ultrasonic attenuation below 2 K, suggesting a mesoscopically textured state of matter. These results point the way to inducing new correlated states of matter in the quantum limit of Weyl semimetals."}],"has_accepted_license":"1","quality_controlled":"1","citation":{"ieee":"B. J. Ramshaw et al., “Quantum limit transport and destruction of the Weyl nodes in TaAs,” Nature Communications, vol. 9, no. 1. Springer Nature, 2018.","chicago":"Ramshaw, B. J., Kimberly A Modic, Arkady Shekhter, Yi Zhang, Eun-Ah Kim, Philip J. W. Moll, Maja D. Bachmann, et al. “Quantum Limit Transport and Destruction of the Weyl Nodes in TaAs.” Nature Communications. Springer Nature, 2018. https://doi.org/10.1038/s41467-018-04542-9.","short":"B.J. Ramshaw, K.A. Modic, A. Shekhter, Y. Zhang, E.-A. Kim, P.J.W. Moll, M.D. Bachmann, M.K. Chan, J.B. Betts, F. Balakirev, A. Migliori, N.J. Ghimire, E.D. Bauer, F. Ronning, R.D. McDonald, Nature Communications 9 (2018).","ama":"Ramshaw BJ, Modic KA, Shekhter A, et al. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. 2018;9(1). doi:10.1038/s41467-018-04542-9","apa":"Ramshaw, B. J., Modic, K. A., Shekhter, A., Zhang, Y., Kim, E.-A., Moll, P. J. W., … McDonald, R. D. (2018). Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-018-04542-9","mla":"Ramshaw, B. J., et al. “Quantum Limit Transport and Destruction of the Weyl Nodes in TaAs.” Nature Communications, vol. 9, no. 1, 2217, Springer Nature, 2018, doi:10.1038/s41467-018-04542-9.","ista":"Ramshaw BJ, Modic KA, Shekhter A, Zhang Y, Kim E-A, Moll PJW, Bachmann MD, Chan MK, Betts JB, Balakirev F, Migliori A, Ghimire NJ, Bauer ED, Ronning F, McDonald RD. 2018. Quantum limit transport and destruction of the Weyl nodes in TaAs. Nature Communications. 9(1), 2217."},"volume":9,"intvolume":" 9","date_created":"2019-11-19T13:10:33Z","publication_status":"published","month":"06","author":[{"full_name":"Ramshaw, B. J.","first_name":"B. J.","last_name":"Ramshaw"},{"last_name":"Modic","first_name":"Kimberly A","full_name":"Modic, Kimberly A","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"full_name":"Shekhter, Arkady","last_name":"Shekhter","first_name":"Arkady"},{"full_name":"Zhang, Yi","first_name":"Yi","last_name":"Zhang"},{"full_name":"Kim, Eun-Ah","first_name":"Eun-Ah","last_name":"Kim"},{"last_name":"Moll","first_name":"Philip J. W.","full_name":"Moll, Philip J. W."},{"full_name":"Bachmann, Maja D.","first_name":"Maja D.","last_name":"Bachmann"},{"last_name":"Chan","first_name":"M. K.","full_name":"Chan, M. K."},{"full_name":"Betts, J. B.","last_name":"Betts","first_name":"J. B."},{"last_name":"Balakirev","first_name":"F.","full_name":"Balakirev, F."},{"full_name":"Migliori, A.","last_name":"Migliori","first_name":"A."},{"last_name":"Ghimire","first_name":"N. J.","full_name":"Ghimire, N. J."},{"first_name":"E. D.","last_name":"Bauer","full_name":"Bauer, E. D."},{"full_name":"Ronning, F.","first_name":"F.","last_name":"Ronning"},{"last_name":"McDonald","first_name":"R. D.","full_name":"McDonald, R. D."}],"type":"journal_article","article_number":"2217","_id":"7062","year":"2018"},{"oa":1,"day":"01","oa_version":"Published Version","extern":"1","doi":"10.1107/s2052252518007303","issue":"4","publication_identifier":{"eissn":["2052-2525"]},"file":[{"file_name":"2018_IUCrJ_Martino.pdf","file_id":"7090","checksum":"5c6180c7d19da599dd50a067eb2efd50","access_level":"open_access","date_updated":"2020-07-14T12:47:48Z","content_type":"application/pdf","relation":"main_file","creator":"dernst","file_size":1563353,"date_created":"2019-11-20T14:00:27Z"}],"article_processing_charge":"No","title":"Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity","publication":"IUCrJ","language":[{"iso":"eng"}],"file_date_updated":"2020-07-14T12:47:48Z","ddc":["530"],"status":"public","article_type":"original","date_published":"2018-07-01T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","quality_controlled":"1","has_accepted_license":"1","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2021-01-12T08:11:38Z","abstract":[{"lang":"eng","text":"The high-pressure synthesis and incommensurately modulated structure are reported for the new compound Sr2Pt8−xAs, with x = 0.715 (5). The structure consists of Sr2Pt3As layers alternating with Pt-only corrugated grids. Ab initio calculations predict a metallic character with a dominant role of the Pt d electrons. The electrical resistivity (ρ) and Seebeck coefficient confirm the metallic character, but surprisingly, ρ showed a near-flat temperature dependence. This observation fits the description of the Mooij correlation for electrical resistivity in disordered metals, originally developed for statistically distributed point defects. The discussed material has a long-range crystallographic order, but the high concentration of Pt vacancies, incommensurately ordered, strongly influences the electronic conduction properties. This result extends the range of validity of the Mooij correlation to long-range ordered incommensurately modulated vacancies. Motivated by the layered structure, the resistivity anisotropy was measured in a focused-ion-beam micro-fabricated well oriented single crystal. A low resistivity anisotropy indicates that the layers are electrically coupled and conduction channels along different directions are intermixed."}],"volume":5,"page":"470-477","citation":{"ista":"Martino E, Arakcheeva A, Autès G, Pisoni A, Bachmann MD, Modic KA, Helm T, Yazyev OV, Moll PJW, Forró L, Katrych S. 2018. Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. 5(4), 470–477.","ama":"Martino E, Arakcheeva A, Autès G, et al. Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. 2018;5(4):470-477. doi:10.1107/s2052252518007303","chicago":"Martino, Edoardo, Alla Arakcheeva, Gabriel Autès, Andrea Pisoni, Maja D. Bachmann, Kimberly A Modic, Toni Helm, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated Metal with Saturated Resistivity.” IUCrJ. International Union of Crystallography (IUCr), 2018. https://doi.org/10.1107/s2052252518007303.","short":"E. Martino, A. Arakcheeva, G. Autès, A. Pisoni, M.D. Bachmann, K.A. Modic, T. Helm, O.V. Yazyev, P.J.W. Moll, L. Forró, S. Katrych, IUCrJ 5 (2018) 470–477.","ieee":"E. Martino et al., “Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity,” IUCrJ, vol. 5, no. 4. International Union of Crystallography (IUCr), pp. 470–477, 2018.","apa":"Martino, E., Arakcheeva, A., Autès, G., Pisoni, A., Bachmann, M. D., Modic, K. A., … Katrych, S. (2018). Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity. IUCrJ. International Union of Crystallography (IUCr). https://doi.org/10.1107/s2052252518007303","mla":"Martino, Edoardo, et al. “Sr2Pt8−xAs: A Layered Incommensurately Modulated Metal with Saturated Resistivity.” IUCrJ, vol. 5, no. 4, International Union of Crystallography (IUCr), 2018, pp. 470–77, doi:10.1107/s2052252518007303."},"publisher":"International Union of Crystallography (IUCr)","year":"2018","_id":"7063","type":"journal_article","date_created":"2019-11-19T13:11:15Z","intvolume":" 5","author":[{"first_name":"Edoardo","last_name":"Martino","full_name":"Martino, Edoardo"},{"full_name":"Arakcheeva, Alla","last_name":"Arakcheeva","first_name":"Alla"},{"full_name":"Autès, Gabriel","first_name":"Gabriel","last_name":"Autès"},{"full_name":"Pisoni, Andrea","last_name":"Pisoni","first_name":"Andrea"},{"first_name":"Maja D.","last_name":"Bachmann","full_name":"Bachmann, Maja D."},{"full_name":"Modic, Kimberly A","first_name":"Kimberly A","last_name":"Modic","id":"13C26AC0-EB69-11E9-87C6-5F3BE6697425","orcid":"0000-0001-9760-3147"},{"first_name":"Toni","last_name":"Helm","full_name":"Helm, Toni"},{"full_name":"Yazyev, Oleg V.","last_name":"Yazyev","first_name":"Oleg V."},{"full_name":"Moll, Philip J. W.","first_name":"Philip J. W.","last_name":"Moll"},{"full_name":"Forró, László","last_name":"Forró","first_name":"László"},{"first_name":"Sergiy","last_name":"Katrych","full_name":"Katrych, Sergiy"}],"publication_status":"published","month":"07"},{"department":[{"_id":"DaAl"}],"conference":{"location":"Vienna, Austria","start_date":"2018-03-26","end_date":"2018-03-29","name":"EDBT: Conference on Extending Database Technology"},"publisher":"OpenProceedings","page":"145-156","citation":{"ista":"Grubic D, Tam L, Alistarh D-A, Zhang C. 2018. Synchronous multi-GPU training for deep learning with low-precision communications: An empirical study. Proceedings of the 21st International Conference on Extending Database Technology. EDBT: Conference on Extending Database Technology, 145–156.","chicago":"Grubic, Demjan, Leo Tam, Dan-Adrian Alistarh, and Ce Zhang. “Synchronous Multi-GPU Training for Deep Learning with Low-Precision Communications: An Empirical Study.” In Proceedings of the 21st International Conference on Extending Database Technology, 145–56. OpenProceedings, 2018. https://doi.org/10.5441/002/EDBT.2018.14.","ama":"Grubic D, Tam L, Alistarh D-A, Zhang C. Synchronous multi-GPU training for deep learning with low-precision communications: An empirical study. In: Proceedings of the 21st International Conference on Extending Database Technology. OpenProceedings; 2018:145-156. doi:10.5441/002/EDBT.2018.14","short":"D. Grubic, L. Tam, D.-A. Alistarh, C. Zhang, in:, Proceedings of the 21st International Conference on Extending Database Technology, OpenProceedings, 2018, pp. 145–156.","ieee":"D. Grubic, L. Tam, D.-A. Alistarh, and C. Zhang, “Synchronous multi-GPU training for deep learning with low-precision communications: An empirical study,” in Proceedings of the 21st International Conference on Extending Database Technology, Vienna, Austria, 2018, pp. 145–156.","mla":"Grubic, Demjan, et al. “Synchronous Multi-GPU Training for Deep Learning with Low-Precision Communications: An Empirical Study.” Proceedings of the 21st International Conference on Extending Database Technology, OpenProceedings, 2018, pp. 145–56, doi:10.5441/002/EDBT.2018.14.","apa":"Grubic, D., Tam, L., Alistarh, D.-A., & Zhang, C. (2018). Synchronous multi-GPU training for deep learning with low-precision communications: An empirical study. In Proceedings of the 21st International Conference on Extending Database Technology (pp. 145–156). Vienna, Austria: OpenProceedings. https://doi.org/10.5441/002/EDBT.2018.14"},"abstract":[{"lang":"eng","text":"Training deep learning models has received tremendous research interest recently. In particular, there has been intensive research on reducing the communication cost of training when using multiple computational devices, through reducing the precision of the underlying data representation. Naturally, such methods induce system trade-offs—lowering communication precision could de-crease communication overheads and improve scalability; but, on the other hand, it can also reduce the accuracy of training. In this paper, we study this trade-off space, and ask:Can low-precision communication consistently improve the end-to-end performance of training modern neural networks, with no accuracy loss?From the performance point of view, the answer to this question may appear deceptively easy: compressing communication through low precision should help when the ratio between communication and computation is high. However, this answer is less straightforward when we try to generalize this principle across various neural network architectures (e.g., AlexNet vs. ResNet),number of GPUs (e.g., 2 vs. 8 GPUs), machine configurations(e.g., EC2 instances vs. NVIDIA DGX-1), communication primitives (e.g., MPI vs. NCCL), and even different GPU architectures(e.g., Kepler vs. Pascal). Currently, it is not clear how a realistic realization of all these factors maps to the speed up provided by low-precision communication. In this paper, we conduct an empirical study to answer this question and report the insights."}],"date_updated":"2023-02-23T12:59:17Z","tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)"},"quality_controlled":"1","has_accepted_license":"1","month":"03","publication_status":"published","author":[{"last_name":"Grubic","first_name":"Demjan","full_name":"Grubic, Demjan"},{"first_name":"Leo","last_name":"Tam","full_name":"Tam, Leo"},{"orcid":"0000-0003-3650-940X","id":"4A899BFC-F248-11E8-B48F-1D18A9856A87","first_name":"Dan-Adrian","last_name":"Alistarh","full_name":"Alistarh, Dan-Adrian"},{"last_name":"Zhang","first_name":"Ce","full_name":"Zhang, Ce"}],"date_created":"2019-11-26T14:19:11Z","type":"conference","year":"2018","_id":"7116","file":[{"file_name":"2018_OpenProceedings_Grubic.pdf","relation":"main_file","content_type":"application/pdf","access_level":"open_access","date_updated":"2020-07-14T12:47:49Z","checksum":"ec979b56abc71016d6e6adfdadbb4afe","file_id":"7118","creator":"dernst","date_created":"2019-11-26T14:23:04Z","file_size":1603204}],"publication_identifier":{"issn":["2367-2005"],"isbn":["9783893180783"]},"scopus_import":1,"doi":"10.5441/002/EDBT.2018.14","oa_version":"Published Version","day":"26","oa":1,"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2018-03-26T00:00:00Z","status":"public","license":"https://creativecommons.org/licenses/by-nc-nd/4.0/","ddc":["000"],"file_date_updated":"2020-07-14T12:47:49Z","language":[{"iso":"eng"}],"publication":"Proceedings of the 21st International Conference on Extending Database Technology","article_processing_charge":"No","title":"Synchronous multi-GPU training for deep learning with low-precision communications: An empirical study"},{"citation":{"ista":"Alistarh D-A, Aspnes J, Gelashvili R. 2018. Space-optimal majority in population protocols. Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms. SODA: Symposium on Discrete Algorithms, 2221–2239.","mla":"Alistarh, Dan-Adrian, et al. “Space-Optimal Majority in Population Protocols.” Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms, ACM, 2018, pp. 2221–39, doi:10.1137/1.9781611975031.144.","apa":"Alistarh, D.-A., Aspnes, J., & Gelashvili, R. (2018). Space-optimal majority in population protocols. In Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms (pp. 2221–2239). New Orleans, LA, United States: ACM. https://doi.org/10.1137/1.9781611975031.144","ieee":"D.-A. Alistarh, J. Aspnes, and R. Gelashvili, “Space-optimal majority in population protocols,” in Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms, New Orleans, LA, United States, 2018, pp. 2221–2239.","short":"D.-A. Alistarh, J. Aspnes, R. Gelashvili, in:, Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms, ACM, 2018, pp. 2221–2239.","chicago":"Alistarh, Dan-Adrian, James Aspnes, and Rati Gelashvili. “Space-Optimal Majority in Population Protocols.” In Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms, 2221–39. ACM, 2018. https://doi.org/10.1137/1.9781611975031.144.","ama":"Alistarh D-A, Aspnes J, Gelashvili R. Space-optimal majority in population protocols. In: Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms. ACM; 2018:2221-2239. doi:10.1137/1.9781611975031.144"},"page":"2221-2239","quality_controlled":"1","abstract":[{"lang":"eng","text":"Population protocols are a popular model of distributed computing, in which n agents with limited local state interact randomly, and cooperate to collectively compute global predicates. Inspired by recent developments in DNA programming, an extensive series of papers, across different communities, has examined the computability and complexity characteristics of this model. Majority, or consensus, is a central task in this model, in which agents need to collectively reach a decision as to which one of two states A or B had a higher initial count. Two metrics are important: the time that a protocol requires to stabilize to an output decision, and the state space size that each agent requires to do so. It is known that majority requires Ω(log log n) states per agent to allow for fast (poly-logarithmic time) stabilization, and that O(log2 n) states are sufficient. Thus, there is an exponential gap between the space upper and lower bounds for this problem. This paper addresses this question.\r\n\r\nOn the negative side, we provide a new lower bound of Ω(log n) states for any protocol which stabilizes in O(n1–c) expected time, for any constant c > 0. This result is conditional on monotonicity and output assumptions, satisfied by all known protocols. Technically, it represents a departure from previous lower bounds, in that it does not rely on the existence of dense configurations. Instead, we introduce a new generalized surgery technique to prove the existence of incorrect executions for any algorithm which would contradict the lower bound. Subsequently, our lower bound also applies to general initial configurations, including ones with a leader. On the positive side, we give a new algorithm for majority which uses O(log n) states, and stabilizes in O(log2 n) expected time. Central to the algorithm is a new leaderless phase clock technique, which allows agents to synchronize in phases of Θ(n log n) consecutive interactions using O(log n) states per agent, exploiting a new connection between population protocols and power-of-two-choices load balancing mechanisms. We also employ our phase clock to build a leader election algorithm with a state space of size O(log n), which stabilizes in O(log2 n) expected time."}],"date_updated":"2023-09-19T15:03:16Z","department":[{"_id":"DaAl"}],"publisher":"ACM","conference":{"location":"New Orleans, LA, United States","start_date":"2018-01-07","end_date":"2018-01-10","name":"SODA: Symposium on Discrete Algorithms"},"year":"2018","_id":"7123","type":"conference","author":[{"full_name":"Alistarh, Dan-Adrian","last_name":"Alistarh","first_name":"Dan-Adrian","orcid":"0000-0003-3650-940X","id":"4A899BFC-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Aspnes","first_name":"James","full_name":"Aspnes, James"},{"full_name":"Gelashvili, Rati","first_name":"Rati","last_name":"Gelashvili"}],"isi":1,"month":"01","publication_status":"published","date_created":"2019-11-26T15:10:55Z","day":"30","oa":1,"external_id":{"isi":["000483921200145"],"arxiv":["1704.04947"]},"publication_identifier":{"isbn":["9781611975031"]},"doi":"10.1137/1.9781611975031.144","oa_version":"Preprint","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1704.04947"}],"arxiv":1,"article_processing_charge":"No","title":"Space-optimal majority in population protocols","language":[{"iso":"eng"}],"publication":"Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","date_published":"2018-01-30T00:00:00Z","status":"public"},{"keyword":["Minimum Description Length","normalized maximum likelihood","statistical criticality","phase transitions","large deviations"],"publisher":"MDPI","citation":{"ista":"Cubero RJ, Marsili M, Roudi Y. 2018. Minimum description length codes are critical. Entropy. 20(10), 755.","apa":"Cubero, R. J., Marsili, M., & Roudi, Y. (2018). Minimum description length codes are critical. Entropy. MDPI. https://doi.org/10.3390/e20100755","mla":"Cubero, Ryan J., et al. “Minimum Description Length Codes Are Critical.” Entropy, vol. 20, no. 10, 755, MDPI, 2018, doi:10.3390/e20100755.","short":"R.J. Cubero, M. Marsili, Y. Roudi, Entropy 20 (2018).","ieee":"R. J. Cubero, M. Marsili, and Y. Roudi, “Minimum description length codes are critical,” Entropy, vol. 20, no. 10. MDPI, 2018.","ama":"Cubero RJ, Marsili M, Roudi Y. Minimum description length codes are critical. Entropy. 2018;20(10). doi:10.3390/e20100755","chicago":"Cubero, Ryan J, Matteo Marsili, and Yasser Roudi. “Minimum Description Length Codes Are Critical.” Entropy. MDPI, 2018. https://doi.org/10.3390/e20100755."},"volume":20,"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2021-01-12T08:11:56Z","abstract":[{"lang":"eng","text":"In the Minimum Description Length (MDL) principle, learning from the data is equivalent to an optimal coding problem. We show that the codes that achieve optimal compression in MDL are critical in a very precise sense. First, when they are taken as generative models of samples, they generate samples with broad empirical distributions and with a high value of the relevance, defined as the entropy of the empirical frequencies. These results are derived for different statistical models (Dirichlet model, independent and pairwise dependent spin models, and restricted Boltzmann machines). Second, MDL codes sit precisely at a second order phase transition point where the symmetry between the sampled outcomes is spontaneously broken. The order parameter controlling the phase transition is the coding cost of the samples. The phase transition is a manifestation of the optimality of MDL codes, and it arises because codes that achieve a higher compression do not exist. These results suggest a clear interpretation of the widespread occurrence of statistical criticality as a characterization of samples which are maximally informative on the underlying generative process."}],"has_accepted_license":"1","quality_controlled":"1","publication_status":"published","month":"10","author":[{"orcid":"0000-0003-0002-1867","id":"850B2E12-9CD4-11E9-837F-E719E6697425","last_name":"Cubero","first_name":"Ryan J","full_name":"Cubero, Ryan J"},{"full_name":"Marsili, Matteo","first_name":"Matteo","last_name":"Marsili"},{"full_name":"Roudi, Yasser","last_name":"Roudi","first_name":"Yasser"}],"intvolume":" 20","date_created":"2019-11-26T22:18:05Z","type":"journal_article","article_number":"755","_id":"7126","year":"2018","file":[{"access_level":"open_access","date_updated":"2020-07-14T12:47:50Z","checksum":"d642b7b661e1d5066b62e6ea9986b917","file_id":"7127","relation":"main_file","content_type":"application/pdf","file_name":"entropy-20-00755-v2.pdf","file_size":1366813,"date_created":"2019-11-26T22:23:08Z","creator":"rcubero"}],"publication_identifier":{"issn":["1099-4300"]},"issue":"10","extern":"1","oa_version":"Published Version","doi":"10.3390/e20100755","oa":1,"day":"01","date_published":"2018-10-01T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","status":"public","ddc":["519"],"file_date_updated":"2020-07-14T12:47:50Z","publication":"Entropy","language":[{"iso":"eng"}],"article_processing_charge":"No","title":"Minimum description length codes are critical"},{"quality_controlled":"1","publist_id":"6957","has_accepted_license":"1","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2023-09-11T14:11:35Z","abstract":[{"lang":"eng","text":"Escaping local optima is one of the major obstacles to function optimisation. Using the metaphor of a fitness landscape, local optima correspond to hills separated by fitness valleys that have to be overcome. We define a class of fitness valleys of tunable difficulty by considering their length, representing the Hamming path between the two optima and their depth, the drop in fitness. For this function class we present a runtime comparison between stochastic search algorithms using different search strategies. The (1+1) EA is a simple and well-studied evolutionary algorithm that has to jump across the valley to a point of higher fitness because it does not accept worsening moves (elitism). In contrast, the Metropolis algorithm and the Strong Selection Weak Mutation (SSWM) algorithm, a famous process in population genetics, are both able to cross the fitness valley by accepting worsening moves. We show that the runtime of the (1+1) EA depends critically on the length of the valley while the runtimes of the non-elitist algorithms depend crucially on the depth of the valley. Moreover, we show that both SSWM and Metropolis can also efficiently optimise a rugged function consisting of consecutive valleys."}],"page":"1604 - 1633","volume":80,"pubrep_id":"1014","citation":{"mla":"Oliveto, Pietro, et al. “How to Escape Local Optima in Black Box Optimisation When Non Elitism Outperforms Elitism.” Algorithmica, vol. 80, no. 5, Springer, 2018, pp. 1604–33, doi:10.1007/s00453-017-0369-2.","apa":"Oliveto, P., Paixao, T., Pérez Heredia, J., Sudholt, D., & Trubenova, B. (2018). How to escape local optima in black box optimisation when non elitism outperforms elitism. Algorithmica. Springer. https://doi.org/10.1007/s00453-017-0369-2","ieee":"P. Oliveto, T. Paixao, J. Pérez Heredia, D. Sudholt, and B. Trubenova, “How to escape local optima in black box optimisation when non elitism outperforms elitism,” Algorithmica, vol. 80, no. 5. Springer, pp. 1604–1633, 2018.","chicago":"Oliveto, Pietro, Tiago Paixao, Jorge Pérez Heredia, Dirk Sudholt, and Barbora Trubenova. “How to Escape Local Optima in Black Box Optimisation When Non Elitism Outperforms Elitism.” Algorithmica. Springer, 2018. https://doi.org/10.1007/s00453-017-0369-2.","short":"P. Oliveto, T. Paixao, J. Pérez Heredia, D. Sudholt, B. Trubenova, Algorithmica 80 (2018) 1604–1633.","ama":"Oliveto P, Paixao T, Pérez Heredia J, Sudholt D, Trubenova B. How to escape local optima in black box optimisation when non elitism outperforms elitism. Algorithmica. 2018;80(5):1604-1633. doi:10.1007/s00453-017-0369-2","ista":"Oliveto P, Paixao T, Pérez Heredia J, Sudholt D, Trubenova B. 2018. How to escape local optima in black box optimisation when non elitism outperforms elitism. Algorithmica. 80(5), 1604–1633."},"publisher":"Springer","department":[{"_id":"NiBa"},{"_id":"CaGu"}],"_id":"723","year":"2018","type":"journal_article","date_created":"2018-12-11T11:48:09Z","intvolume":" 80","author":[{"full_name":"Oliveto, Pietro","first_name":"Pietro","last_name":"Oliveto"},{"full_name":"Paixao, Tiago","last_name":"Paixao","first_name":"Tiago","id":"2C5658E6-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0003-2361-3953"},{"full_name":"Pérez Heredia, Jorge","last_name":"Pérez Heredia","first_name":"Jorge"},{"full_name":"Sudholt, Dirk","first_name":"Dirk","last_name":"Sudholt"},{"last_name":"Trubenova","first_name":"Barbora","full_name":"Trubenova, Barbora","orcid":"0000-0002-6873-2967","id":"42302D54-F248-11E8-B48F-1D18A9856A87"}],"project":[{"call_identifier":"FP7","grant_number":"618091","name":"Speed of Adaptation in Population Genetics and Evolutionary Computation","_id":"25B1EC9E-B435-11E9-9278-68D0E5697425"}],"publication_status":"published","isi":1,"month":"05","ec_funded":1,"oa":1,"day":"01","oa_version":"Published Version","doi":"10.1007/s00453-017-0369-2","external_id":{"isi":["000428239300010"]},"issue":"5","scopus_import":"1","file":[{"creator":"system","file_size":691245,"date_created":"2018-12-12T10:08:14Z","file_name":"IST-2018-1014-v1+1_2018_Paixao_Escape.pdf","date_updated":"2020-07-14T12:47:54Z","access_level":"open_access","file_id":"4674","checksum":"7d92f5d7be81e387edeec4f06442791c","content_type":"application/pdf","relation":"main_file"}],"article_processing_charge":"No","title":"How to escape local optima in black box optimisation when non elitism outperforms elitism","publication":"Algorithmica","language":[{"iso":"eng"}],"file_date_updated":"2020-07-14T12:47:54Z","ddc":["576"],"status":"public","date_published":"2018-05-01T00:00:00Z","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1"},{"doi":"10.1021/acsanm.8b01036","oa_version":"None","publisher":"ACS","extern":"1","issue":"9","publication_identifier":{"issn":["2574-0970"]},"quality_controlled":"1","abstract":[{"text":"The recent demand of multifunctional materials and devices for advanced applications in energy conversion and data storage resulted into a revival of multiferroics, that is, materials characterized by the coexistence of ferromagnetism and ferroelectricity. Despite intense efforts made in the past decade, single-phase room temperature multiferroics are yet to be discovered/fabricated. Nanostructured ferroic materials could potentially exhibit multiferroism since a high fraction of their atoms/ions are superficial, thereby altering significantly the properties of the bulk phase. Alternately, a magnetic order can be induced into ferroelectric materials upon aliovalent doping with magnetic ions. Here, we report on the synthesis of aggregate-free single-phase transition-metal-doped BaTiO3 quasi-monodisperse cuboidal nanocrystals (NC) which exhibit multiferroic properties at room temperature and can be suitable for applications in data storage. The proposed synthetic route allows the inclusion of a high concentration of magnetic ions such as Mn+ (M = Cr, Mn, Fe, Co) up to a nominal concentration of 4% without the formation of any secondary phase. The size of the nanocrystals was controlled in a wide range from ∼15 up to ∼70 nm by varying the reaction time from 48 to 144 h. The presence of unpaired electrons and their magnetic ordering have been probed by electron paramagnetic resonance spectroscopy (EPR), and a vibrating sample magnetometer (VSM). Likewise, an acentric structure, associated with the existence of a dielectric polarization, was observed by lattice dynamics analysis and piezoresponse force microscopy (PFM). These results show that high-quality titanium-containing perovskite nanocrystals which display multiferroic properties at room temperature can be fabricated via soft solution-based synthetic routes, and the properties of these materials can be modulated by changing the size of the nanocrystals and the concentration of the dopant thereby opening the door to the design and study of single-phase multiferroic materials.","lang":"eng"}],"date_updated":"2023-02-23T13:02:57Z","day":"28","page":"4863-4874","volume":1,"citation":{"chicago":"Costanzo, Tommaso, John McCracken, Aurelian Rotaru, and Gabriel Caruntu. “Quasi-Monodisperse Transition-Metal-Doped BaTiO3 (M = Cr, Mn, Fe, Co) Colloidal Nanocrystals with Multiferroic Properties.” ACS Applied Nano Materials. ACS, 2018. https://doi.org/10.1021/acsanm.8b01036.","short":"T. Costanzo, J. McCracken, A. Rotaru, G. Caruntu, ACS Applied Nano Materials 1 (2018) 4863–4874.","ieee":"T. Costanzo, J. McCracken, A. Rotaru, and G. Caruntu, “Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal nanocrystals with multiferroic properties,” ACS Applied Nano Materials, vol. 1, no. 9. ACS, pp. 4863–4874, 2018.","ama":"Costanzo T, McCracken J, Rotaru A, Caruntu G. Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal nanocrystals with multiferroic properties. ACS Applied Nano Materials. 2018;1(9):4863-4874. doi:10.1021/acsanm.8b01036","apa":"Costanzo, T., McCracken, J., Rotaru, A., & Caruntu, G. (2018). Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal nanocrystals with multiferroic properties. ACS Applied Nano Materials. ACS. https://doi.org/10.1021/acsanm.8b01036","mla":"Costanzo, Tommaso, et al. “Quasi-Monodisperse Transition-Metal-Doped BaTiO3 (M = Cr, Mn, Fe, Co) Colloidal Nanocrystals with Multiferroic Properties.” ACS Applied Nano Materials, vol. 1, no. 9, ACS, 2018, pp. 4863–74, doi:10.1021/acsanm.8b01036.","ista":"Costanzo T, McCracken J, Rotaru A, Caruntu G. 2018. Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal nanocrystals with multiferroic properties. ACS Applied Nano Materials. 1(9), 4863–4874."},"date_created":"2020-01-13T21:58:27Z","status":"public","intvolume":" 1","article_type":"original","author":[{"last_name":"Costanzo","first_name":"Tommaso","full_name":"Costanzo, Tommaso","orcid":"0000-0001-9732-3815","id":"D93824F4-D9BA-11E9-BB12-F207E6697425"},{"full_name":"McCracken, John","first_name":"John","last_name":"McCracken"},{"full_name":"Rotaru, Aurelian","last_name":"Rotaru","first_name":"Aurelian"},{"last_name":"Caruntu","first_name":"Gabriel","full_name":"Caruntu, Gabriel"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"09","publication_status":"published","date_published":"2018-09-28T00:00:00Z","article_processing_charge":"No","title":"Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal nanocrystals with multiferroic properties","language":[{"iso":"eng"}],"publication":"ACS Applied Nano Materials","_id":"7271","year":"2018","type":"journal_article"},{"file_date_updated":"2020-07-14T12:47:55Z","language":[{"iso":"eng"}],"publication":"Angewandte Chemie International Edition","title":"Electrochemical oxidation of Lithium Carbonate generates singlet oxygen","article_processing_charge":"No","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2018-03-15T00:00:00Z","article_type":"original","status":"public","ddc":["540"],"day":"15","oa":1,"publication_identifier":{"issn":["1433-7851"]},"file":[{"creator":"dernst","file_size":657963,"date_created":"2020-01-22T16:28:31Z","file_name":"2018_AngewChemie_Mahne.pdf","file_id":"7357","checksum":"45868d0adc2d13a506bb9a59eb4f409c","date_updated":"2020-07-14T12:47:55Z","access_level":"open_access","relation":"main_file","content_type":"application/pdf"}],"issue":"19","doi":"10.1002/anie.201802277","extern":"1","oa_version":"Published Version","type":"journal_article","_id":"7277","year":"2018","month":"03","publication_status":"published","author":[{"full_name":"Mahne, Nika","last_name":"Mahne","first_name":"Nika"},{"full_name":"Renfrew, Sara E.","last_name":"Renfrew","first_name":"Sara E."},{"first_name":"Bryan D.","last_name":"McCloskey","full_name":"McCloskey, Bryan D."},{"full_name":"Freunberger, Stefan Alexander","first_name":"Stefan Alexander","last_name":"Freunberger","id":"A8CA28E6-CE23-11E9-AD2D-EC27E6697425","orcid":"0000-0003-2902-5319"}],"intvolume":" 57","date_created":"2020-01-15T07:20:09Z","volume":57,"citation":{"ista":"Mahne N, Renfrew SE, McCloskey BD, Freunberger SA. 2018. Electrochemical oxidation of Lithium Carbonate generates singlet oxygen. Angewandte Chemie International Edition. 57(19), 5529–5533.","ama":"Mahne N, Renfrew SE, McCloskey BD, Freunberger SA. Electrochemical oxidation of Lithium Carbonate generates singlet oxygen. Angewandte Chemie International Edition. 2018;57(19):5529-5533. doi:10.1002/anie.201802277","chicago":"Mahne, Nika, Sara E. Renfrew, Bryan D. McCloskey, and Stefan Alexander Freunberger. “Electrochemical Oxidation of Lithium Carbonate Generates Singlet Oxygen.” Angewandte Chemie International Edition. Wiley, 2018. https://doi.org/10.1002/anie.201802277.","short":"N. Mahne, S.E. Renfrew, B.D. McCloskey, S.A. Freunberger, Angewandte Chemie International Edition 57 (2018) 5529–5533.","ieee":"N. Mahne, S. E. Renfrew, B. D. McCloskey, and S. A. Freunberger, “Electrochemical oxidation of Lithium Carbonate generates singlet oxygen,” Angewandte Chemie International Edition, vol. 57, no. 19. Wiley, pp. 5529–5533, 2018.","mla":"Mahne, Nika, et al. “Electrochemical Oxidation of Lithium Carbonate Generates Singlet Oxygen.” Angewandte Chemie International Edition, vol. 57, no. 19, Wiley, 2018, pp. 5529–33, doi:10.1002/anie.201802277.","apa":"Mahne, N., Renfrew, S. E., McCloskey, B. D., & Freunberger, S. A. (2018). Electrochemical oxidation of Lithium Carbonate generates singlet oxygen. Angewandte Chemie International Edition. Wiley. https://doi.org/10.1002/anie.201802277"},"page":"5529-5533","abstract":[{"text":"Solid alkali metal carbonates are universal passivation layer components of intercalation battery materials and common side products in metal‐O2 batteries, and are believed to form and decompose reversibly in metal‐O2/CO2 cells. In these cathodes, Li2CO3 decomposes to CO2 when exposed to potentials above 3.8 V vs. Li/Li+. However, O2 evolution, as would be expected according to the decomposition reaction 2 Li2CO3→4 Li++4 e−+2 CO2+O2, is not detected. O atoms are thus unaccounted for, which was previously ascribed to unidentified parasitic reactions. Here, we show that highly reactive singlet oxygen (1O2) forms upon oxidizing Li2CO3 in an aprotic electrolyte and therefore does not evolve as O2. These results have substantial implications for the long‐term cyclability of batteries: they underpin the importance of avoiding 1O2 in metal‐O2 batteries, question the possibility of a reversible metal‐O2/CO2 battery based on a carbonate discharge product, and help explain the interfacial reactivity of transition‐metal cathodes with residual Li2CO3.","lang":"eng"}],"tmp":{"name":"Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)","image":"/images/cc_by_nc_nd.png","legal_code_url":"https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode","short":"CC BY-NC-ND (4.0)"},"date_updated":"2021-01-12T08:12:42Z","quality_controlled":"1","has_accepted_license":"1","publisher":"Wiley"},{"publisher":"ACS","abstract":[{"lang":"eng","text":"Hydrogelation, the self-assembly of molecules into soft, water-loaded networks, is one way to bridge the structural gap between single molecules and functional materials. The potential of hydrogels, such as those based on perylene bisimides, lies in their chemical, physical, optical, and electronic properties, which are governed by the supramolecular structure of the gel. However, the structural motifs and their precise role for long-range conductivity are yet to be explored. Here, we present a comprehensive structural picture of a perylene bisimide hydrogel, suggesting that its long-range conductivity is limited by charge transfer between electronic backbones. We reveal nanocrystalline ribbon-like structures as the electronic and structural backbone units between which charge transfer is mediated by polar solvent bridges. We exemplify this effect with sensing, where exposure to polar vapor enhances conductivity by 5 orders of magnitude, emphasizing the crucial role of the interplay between structural motif and surrounding medium for the rational design of devices based on nanocrystalline hydrogels."}],"date_updated":"2021-01-12T08:12:46Z","has_accepted_license":"1","quality_controlled":"1","page":"5800-5806","citation":{"ista":"Burian M, Rigodanza F, Demitri N, D̵ord̵ević L, Marchesan S, Steinhartova T, Letofsky-Papst I, Khalakhan I, Mourad E, Freunberger SA, Amenitsch H, Prato M, Syrgiannis Z. 2018. Inter-backbone charge transfer as prerequisite for long-range conductivity in perylene bisimide hydrogels. ACS Nano. 12(6), 5800–5806.","mla":"Burian, Max, et al. “Inter-Backbone Charge Transfer as Prerequisite for Long-Range Conductivity in Perylene Bisimide Hydrogels.” ACS Nano, vol. 12, no. 6, ACS, 2018, pp. 5800–06, doi:10.1021/acsnano.8b01689.","apa":"Burian, M., Rigodanza, F., Demitri, N., D̵ord̵ević, L., Marchesan, S., Steinhartova, T., … Syrgiannis, Z. (2018). Inter-backbone charge transfer as prerequisite for long-range conductivity in perylene bisimide hydrogels. ACS Nano. ACS. https://doi.org/10.1021/acsnano.8b01689","ieee":"M. Burian et al., “Inter-backbone charge transfer as prerequisite for long-range conductivity in perylene bisimide hydrogels,” ACS Nano, vol. 12, no. 6. ACS, pp. 5800–5806, 2018.","ama":"Burian M, Rigodanza F, Demitri N, et al. Inter-backbone charge transfer as prerequisite for long-range conductivity in perylene bisimide hydrogels. ACS Nano. 2018;12(6):5800-5806. doi:10.1021/acsnano.8b01689","short":"M. Burian, F. Rigodanza, N. Demitri, L. D̵ord̵ević, S. Marchesan, T. Steinhartova, I. Letofsky-Papst, I. Khalakhan, E. Mourad, S.A. Freunberger, H. Amenitsch, M. Prato, Z. Syrgiannis, ACS Nano 12 (2018) 5800–5806.","chicago":"Burian, Max, Francesco Rigodanza, Nicola Demitri, Luka D̵ord̵ević, Silvia Marchesan, Tereza Steinhartova, Ilse Letofsky-Papst, et al. “Inter-Backbone Charge Transfer as Prerequisite for Long-Range Conductivity in Perylene Bisimide Hydrogels.” ACS Nano. ACS, 2018. https://doi.org/10.1021/acsnano.8b01689."},"volume":12,"intvolume":" 12","date_created":"2020-01-15T12:13:25Z","month":"06","publication_status":"published","author":[{"full_name":"Burian, Max","first_name":"Max","last_name":"Burian"},{"full_name":"Rigodanza, Francesco","first_name":"Francesco","last_name":"Rigodanza"},{"full_name":"Demitri, Nicola","first_name":"Nicola","last_name":"Demitri"},{"first_name":"Luka","last_name":"D̵ord̵ević","full_name":"D̵ord̵ević, Luka"},{"last_name":"Marchesan","first_name":"Silvia","full_name":"Marchesan, Silvia"},{"full_name":"Steinhartova, Tereza","first_name":"Tereza","last_name":"Steinhartova"},{"first_name":"Ilse","last_name":"Letofsky-Papst","full_name":"Letofsky-Papst, Ilse"},{"first_name":"Ivan","last_name":"Khalakhan","full_name":"Khalakhan, Ivan"},{"full_name":"Mourad, Eléonore","last_name":"Mourad","first_name":"Eléonore"},{"id":"A8CA28E6-CE23-11E9-AD2D-EC27E6697425","orcid":"0000-0003-2902-5319","first_name":"Stefan Alexander","last_name":"Freunberger","full_name":"Freunberger, Stefan Alexander"},{"last_name":"Amenitsch","first_name":"Heinz","full_name":"Amenitsch, Heinz"},{"full_name":"Prato, Maurizio","first_name":"Maurizio","last_name":"Prato"},{"full_name":"Syrgiannis, Zois","first_name":"Zois","last_name":"Syrgiannis"}],"type":"journal_article","_id":"7285","year":"2018","doi":"10.1021/acsnano.8b01689","extern":"1","oa_version":"Submitted Version","publication_identifier":{"issn":["1936-0851"]},"file":[{"date_created":"2020-06-29T14:56:40Z","file_size":1333353,"creator":"sfreunbe","content_type":"application/pdf","relation":"main_file","checksum":"050f7f0ba5d845c5c71779ef14ad5ef3","file_id":"8052","date_updated":"2020-07-14T12:47:55Z","access_level":"open_access","file_name":"Manuscript 20092017_subm.pdf"}],"issue":"6","day":"05","oa":1,"status":"public","ddc":["540","541"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_published":"2018-06-05T00:00:00Z","article_type":"original","language":[{"iso":"eng"}],"publication":"ACS Nano","title":"Inter-backbone charge transfer as prerequisite for long-range conductivity in perylene bisimide hydrogels","article_processing_charge":"No","file_date_updated":"2020-07-14T12:47:55Z"},{"publication":"Chemistry of Materials","language":[{"iso":"eng"}],"article_processing_charge":"No","title":"Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components: Structure, ion transport, and mechanical properties","type":"journal_article","_id":"7286","year":"2018","intvolume":" 30","status":"public","date_created":"2020-01-15T12:13:37Z","publication_status":"published","date_published":"2018-05-03T00:00:00Z","month":"05","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_type":"original","author":[{"last_name":"Schafzahl","first_name":"Lukas","full_name":"Schafzahl, Lukas"},{"full_name":"Ehmann, Heike","last_name":"Ehmann","first_name":"Heike"},{"first_name":"Manfred","last_name":"Kriechbaum","full_name":"Kriechbaum, Manfred"},{"last_name":"Sattelkow","first_name":"Jürgen","full_name":"Sattelkow, Jürgen"},{"full_name":"Ganner, Thomas","last_name":"Ganner","first_name":"Thomas"},{"full_name":"Plank, Harald","first_name":"Harald","last_name":"Plank"},{"first_name":"Martin","last_name":"Wilkening","full_name":"Wilkening, Martin"},{"id":"A8CA28E6-CE23-11E9-AD2D-EC27E6697425","orcid":"0000-0003-2902-5319","full_name":"Freunberger, Stefan Alexander","last_name":"Freunberger","first_name":"Stefan Alexander"}],"date_updated":"2021-01-12T08:12:46Z","abstract":[{"text":"The solid electrolyte interphase (SEI) in Li and Na ion batteries forms when highly reducing or oxidizing electrode materials come into contact with a liquid organic electrolyte. Its ability to form a mechanically robust, ion-conducting, and electron-insulating layer critically determines performance, cycle life, and safety. Li or Na alkyl carbonates (LiAC and NaAC, respectively) are lead SEI components in state-of-the-art carbonate based electrolytes, and our fundamental understanding of their charge transport and mechanical properties may hold the key to designing electrolytes forming an improved SEI. We synthesized a homologous series of LiACs and NaACs from methyl to octyl analogues and characterized them with respect to structure, ionic conductivity, and stiffness. The compounds assume layered structures except for the lithium methyl carbonate. Room-temperature conductivities were found to be ∼10–9 S cm–1 for lithium methyl carbonate, <10–12 S cm–1 for the other LiACs, and <10–12 S cm–1 for the NaACs with ion transport mostly attributed to grain boundaries. While LiACs show stiffnesses of ∼1 GPa, NaACs become significantly softer with increasing chain lengths. These findings will help to more precisely interpret the complex results from charge transport and mechanical characterization of real SEIs and can give a rationale for influencing the SEI’s mechanical properties via the electrolyte.","lang":"eng"}],"quality_controlled":"1","page":"3338-3345","volume":30,"citation":{"ista":"Schafzahl L, Ehmann H, Kriechbaum M, Sattelkow J, Ganner T, Plank H, Wilkening M, Freunberger SA. 2018. Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components: Structure, ion transport, and mechanical properties. Chemistry of Materials. 30(10), 3338–3345.","chicago":"Schafzahl, Lukas, Heike Ehmann, Manfred Kriechbaum, Jürgen Sattelkow, Thomas Ganner, Harald Plank, Martin Wilkening, and Stefan Alexander Freunberger. “Long-Chain Li and Na Alkyl Carbonates as Solid Electrolyte Interphase Components: Structure, Ion Transport, and Mechanical Properties.” Chemistry of Materials. ACS, 2018. https://doi.org/10.1021/acs.chemmater.8b00750.","ama":"Schafzahl L, Ehmann H, Kriechbaum M, et al. Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components: Structure, ion transport, and mechanical properties. Chemistry of Materials. 2018;30(10):3338-3345. doi:10.1021/acs.chemmater.8b00750","ieee":"L. Schafzahl et al., “Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components: Structure, ion transport, and mechanical properties,” Chemistry of Materials, vol. 30, no. 10. ACS, pp. 3338–3345, 2018.","short":"L. Schafzahl, H. Ehmann, M. Kriechbaum, J. Sattelkow, T. Ganner, H. Plank, M. Wilkening, S.A. Freunberger, Chemistry of Materials 30 (2018) 3338–3345.","mla":"Schafzahl, Lukas, et al. “Long-Chain Li and Na Alkyl Carbonates as Solid Electrolyte Interphase Components: Structure, Ion Transport, and Mechanical Properties.” Chemistry of Materials, vol. 30, no. 10, ACS, 2018, pp. 3338–45, doi:10.1021/acs.chemmater.8b00750.","apa":"Schafzahl, L., Ehmann, H., Kriechbaum, M., Sattelkow, J., Ganner, T., Plank, H., … Freunberger, S. A. (2018). Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components: Structure, ion transport, and mechanical properties. Chemistry of Materials. ACS. https://doi.org/10.1021/acs.chemmater.8b00750"},"day":"03","extern":"1","publisher":"ACS","oa_version":"None","doi":"10.1021/acs.chemmater.8b00750","publication_identifier":{"issn":["0897-4756"],"eissn":["1520-5002"]},"issue":"10"},{"date_created":"2020-01-15T12:13:52Z","intvolume":" 3","author":[{"full_name":"Schafzahl, Bettina","last_name":"Schafzahl","first_name":"Bettina"},{"full_name":"Mourad, Eléonore","last_name":"Mourad","first_name":"Eléonore"},{"full_name":"Schafzahl, Lukas","first_name":"Lukas","last_name":"Schafzahl"},{"full_name":"Petit, Yann K.","last_name":"Petit","first_name":"Yann K."},{"last_name":"Raju","first_name":"Anjana R.","full_name":"Raju, Anjana R."},{"first_name":"Musthafa Ottakam","last_name":"Thotiyl","full_name":"Thotiyl, Musthafa Ottakam"},{"full_name":"Wilkening, Martin","last_name":"Wilkening","first_name":"Martin"},{"full_name":"Slugovc, Christian","last_name":"Slugovc","first_name":"Christian"},{"id":"A8CA28E6-CE23-11E9-AD2D-EC27E6697425","orcid":"0000-0003-2902-5319","last_name":"Freunberger","first_name":"Stefan Alexander","full_name":"Freunberger, Stefan Alexander"}],"publication_status":"published","month":"01","_id":"7287","year":"2018","type":"journal_article","publisher":"ACS","has_accepted_license":"1","quality_controlled":"1","date_updated":"2021-01-12T08:12:46Z","abstract":[{"lang":"eng","text":"Passivation layers on electrode materials are ubiquitous in nonaqueous battery chemistries and strongly govern performance and lifetime. They comprise breakdown products of the electrolyte including carbonate, alkyl carbonates, alkoxides, carboxylates, and polymers. Parasitic chemistry in metal–O2 batteries forms similar products and is tied to the deviation of the O2 balance from the ideal stoichiometry during formation/decomposition of alkaline peroxides or superoxides. Accurate and integral quantification of carbonaceous species and peroxides or superoxides in battery electrodes remains, however, elusive. We present a refined procedure to quantify them accurately and sensitively by pointing out and rectifying pitfalls of previous procedures. Carbonaceous compounds are differentiated into inorganic and organic ones. We combine mass and UV–vis spectrometry to quantify evolved O2 and complexed peroxide and CO2 evolved from carbonaceous compounds by acid treatment and Fenton’s reaction. The capabilities of the method are exemplified by means of Li–O2 and Na–O2 cathodes, graphite anodes, and LiNi0.8Co0.15Al0.05O2 cathodes."}],"page":"170-176","citation":{"mla":"Schafzahl, Bettina, et al. “Quantifying Total Superoxide, Peroxide, and Carbonaceous Compounds in Metal–O2 Batteries and the Solid Electrolyte Interphase.” ACS Energy Letters, vol. 3, no. 1, ACS, 2018, pp. 170–76, doi:10.1021/acsenergylett.7b01111.","apa":"Schafzahl, B., Mourad, E., Schafzahl, L., Petit, Y. K., Raju, A. R., Thotiyl, M. O., … Freunberger, S. A. (2018). Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2 batteries and the solid electrolyte interphase. ACS Energy Letters. ACS. https://doi.org/10.1021/acsenergylett.7b01111","chicago":"Schafzahl, Bettina, Eléonore Mourad, Lukas Schafzahl, Yann K. Petit, Anjana R. Raju, Musthafa Ottakam Thotiyl, Martin Wilkening, Christian Slugovc, and Stefan Alexander Freunberger. “Quantifying Total Superoxide, Peroxide, and Carbonaceous Compounds in Metal–O2 Batteries and the Solid Electrolyte Interphase.” ACS Energy Letters. ACS, 2018. https://doi.org/10.1021/acsenergylett.7b01111.","ama":"Schafzahl B, Mourad E, Schafzahl L, et al. Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2 batteries and the solid electrolyte interphase. ACS Energy Letters. 2018;3(1):170-176. doi:10.1021/acsenergylett.7b01111","short":"B. Schafzahl, E. Mourad, L. Schafzahl, Y.K. Petit, A.R. Raju, M.O. Thotiyl, M. Wilkening, C. Slugovc, S.A. Freunberger, ACS Energy Letters 3 (2018) 170–176.","ieee":"B. Schafzahl et al., “Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2 batteries and the solid electrolyte interphase,” ACS Energy Letters, vol. 3, no. 1. ACS, pp. 170–176, 2018.","ista":"Schafzahl B, Mourad E, Schafzahl L, Petit YK, Raju AR, Thotiyl MO, Wilkening M, Slugovc C, Freunberger SA. 2018. Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2 batteries and the solid electrolyte interphase. ACS Energy Letters. 3(1), 170–176."},"volume":3,"ddc":["540","543","546","547"],"status":"public","article_type":"letter_note","date_published":"2018-01-01T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","title":"Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2 batteries and the solid electrolyte interphase","publication":"ACS Energy Letters","language":[{"iso":"eng"}],"file_date_updated":"2020-07-14T12:47:55Z","oa_version":"Submitted Version","extern":"1","doi":"10.1021/acsenergylett.7b01111","issue":"1","publication_identifier":{"issn":["2380-8195","2380-8195"]},"file":[{"creator":"sfreunbe","file_size":1892355,"date_created":"2020-06-29T14:19:36Z","file_name":"O2 TIOC_fin_incl_SI.pdf","access_level":"open_access","date_updated":"2020-07-14T12:47:55Z","file_id":"8049","checksum":"461ccf575ba077af90314fe72d20521e","relation":"main_file","content_type":"application/pdf"}],"oa":1,"day":"01"},{"year":"2018","_id":"738","related_material":{"record":[{"id":"2820","status":"public","relation":"earlier_version"}]},"type":"journal_article","date_created":"2018-12-11T11:48:14Z","intvolume":" 54","author":[{"orcid":"0000-0002-4561-241X","id":"2E5DCA20-F248-11E8-B48F-1D18A9856A87","full_name":"Chatterjee, Krishnendu","first_name":"Krishnendu","last_name":"Chatterjee"},{"first_name":"Andreas","last_name":"Pavlogiannis","full_name":"Pavlogiannis, Andreas","orcid":"0000-0002-8943-0722","id":"49704004-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Alexander","last_name":"Kößler","full_name":"Kößler, Alexander"},{"full_name":"Schmid, Ulrich","first_name":"Ulrich","last_name":"Schmid"}],"month":"01","isi":1,"ec_funded":1,"project":[{"call_identifier":"FWF","grant_number":"S 11407_N23","name":"Rigorous Systems Engineering","_id":"25832EC2-B435-11E9-9278-68D0E5697425"},{"name":"Game Theory","_id":"25863FF4-B435-11E9-9278-68D0E5697425","grant_number":"S11407","call_identifier":"FWF"},{"call_identifier":"FWF","grant_number":"P 23499-N23","_id":"2584A770-B435-11E9-9278-68D0E5697425","name":"Modern Graph Algorithmic Techniques in Formal Verification"},{"grant_number":"279307","call_identifier":"FP7","name":"Quantitative Graph Games: Theory and Applications","_id":"2581B60A-B435-11E9-9278-68D0E5697425"},{"_id":"2587B514-B435-11E9-9278-68D0E5697425","name":"Microsoft Research Faculty Fellowship"}],"publication_status":"published","quality_controlled":"1","publist_id":"6929","has_accepted_license":"1","abstract":[{"lang":"eng","text":"This paper is devoted to automatic competitive analysis of real-time scheduling algorithms for firm-deadline tasksets, where only completed tasks con- tribute some utility to the system. Given such a taskset T , the competitive ratio of an on-line scheduling algorithm A for T is the worst-case utility ratio of A over the utility achieved by a clairvoyant algorithm. We leverage the theory of quantitative graph games to address the competitive analysis and competitive synthesis problems. For the competitive analysis case, given any taskset T and any finite-memory on- line scheduling algorithm A , we show that the competitive ratio of A in T can be computed in polynomial time in the size of the state space of A . Our approach is flexible as it also provides ways to model meaningful constraints on the released task sequences that determine the competitive ratio. We provide an experimental study of many well-known on-line scheduling algorithms, which demonstrates the feasibility of our competitive analysis approach that effectively replaces human ingenuity (required Preliminary versions of this paper have appeared in Chatterjee et al. ( 2013 , 2014 ). B Andreas Pavlogiannis pavlogiannis@ist.ac.at Krishnendu Chatterjee krish.chat@ist.ac.at Alexander Kößler koe@ecs.tuwien.ac.at Ulrich Schmid s@ecs.tuwien.ac.at 1 IST Austria (Institute of Science and Technology Austria), Am Campus 1, 3400 Klosterneuburg, Austria 2 Embedded Computing Systems Group, Vienna University of Technology, Treitlstrasse 3, 1040 Vienna, Austria 123 Real-Time Syst for finding worst-case scenarios) by computing power. For the competitive synthesis case, we are just given a taskset T , and the goal is to automatically synthesize an opti- mal on-line scheduling algorithm A , i.e., one that guarantees the largest competitive ratio possible for T . We show how the competitive synthesis problem can be reduced to a two-player graph game with partial information, and establish that the compu- tational complexity of solving this game is Np -complete. The competitive synthesis problem is hence in Np in the size of the state space of the non-deterministic labeled transition system encoding the taskset. Overall, the proposed framework assists in the selection of suitable scheduling algorithms for a given taskset, which is in fact the most common situation in real-time systems design. "}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2023-09-27T12:52:38Z","page":"166 - 207","pubrep_id":"960","volume":54,"citation":{"ista":"Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. 2018. Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. 54(1), 166–207.","mla":"Chatterjee, Krishnendu, et al. “Automated Competitive Analysis of Real Time Scheduling with Graph Games.” Real-Time Systems, vol. 54, no. 1, Springer, 2018, pp. 166–207, doi:10.1007/s11241-017-9293-4.","apa":"Chatterjee, K., Pavlogiannis, A., Kößler, A., & Schmid, U. (2018). Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. Springer. https://doi.org/10.1007/s11241-017-9293-4","chicago":"Chatterjee, Krishnendu, Andreas Pavlogiannis, Alexander Kößler, and Ulrich Schmid. “Automated Competitive Analysis of Real Time Scheduling with Graph Games.” Real-Time Systems. Springer, 2018. https://doi.org/10.1007/s11241-017-9293-4.","ama":"Chatterjee K, Pavlogiannis A, Kößler A, Schmid U. Automated competitive analysis of real time scheduling with graph games. Real-Time Systems. 2018;54(1):166-207. doi:10.1007/s11241-017-9293-4","ieee":"K. Chatterjee, A. Pavlogiannis, A. Kößler, and U. Schmid, “Automated competitive analysis of real time scheduling with graph games,” Real-Time Systems, vol. 54, no. 1. Springer, pp. 166–207, 2018.","short":"K. Chatterjee, A. Pavlogiannis, A. Kößler, U. Schmid, Real-Time Systems 54 (2018) 166–207."},"publisher":"Springer","department":[{"_id":"KrCh"}],"article_processing_charge":"No","title":"Automated competitive analysis of real time scheduling with graph games","language":[{"iso":"eng"}],"publication":"Real-Time Systems","file_date_updated":"2020-07-14T12:47:56Z","ddc":["000"],"status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","date_published":"2018-01-01T00:00:00Z","day":"01","oa":1,"doi":"10.1007/s11241-017-9293-4","oa_version":"Published Version","issue":"1","scopus_import":"1","external_id":{"isi":["000419955500006"]},"file":[{"file_id":"5267","checksum":"c2590ef160709d8054cf29ee173f1454","access_level":"open_access","date_updated":"2020-07-14T12:47:56Z","relation":"main_file","content_type":"application/pdf","file_name":"IST-2018-960-v1+1_2017_Chatterjee_Automated_competetive.pdf","file_size":1163507,"date_created":"2018-12-12T10:17:14Z","creator":"system"}]},{"citation":{"ista":"Pietrzak KZ. 2018. Proofs of catalytic space. 10th Innovations in Theoretical Computer Science Conference (ITCS 2019). ITCS: Innovations in theoretical Computer Science Conference, LIPIcs, vol. 124, 59:1-59:25.","mla":"Pietrzak, Krzysztof Z. “Proofs of Catalytic Space.” 10th Innovations in Theoretical Computer Science Conference (ITCS 2019), vol. 124, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018, p. 59:1-59:25, doi:10.4230/LIPICS.ITCS.2019.59.","apa":"Pietrzak, K. Z. (2018). Proofs of catalytic space. In 10th Innovations in Theoretical Computer Science Conference (ITCS 2019) (Vol. 124, p. 59:1-59:25). San Diego, CA, United States: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPICS.ITCS.2019.59","ieee":"K. Z. Pietrzak, “Proofs of catalytic space,” in 10th Innovations in Theoretical Computer Science Conference (ITCS 2019), San Diego, CA, United States, 2018, vol. 124, p. 59:1-59:25.","short":"K.Z. Pietrzak, in:, 10th Innovations in Theoretical Computer Science Conference (ITCS 2019), Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018, p. 59:1-59:25.","ama":"Pietrzak KZ. Proofs of catalytic space. In: 10th Innovations in Theoretical Computer Science Conference (ITCS 2019). Vol 124. Schloss Dagstuhl - Leibniz-Zentrum für Informatik; 2018:59:1-59:25. doi:10.4230/LIPICS.ITCS.2019.59","chicago":"Pietrzak, Krzysztof Z. “Proofs of Catalytic Space.” In 10th Innovations in Theoretical Computer Science Conference (ITCS 2019), 124:59:1-59:25. Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2018. https://doi.org/10.4230/LIPICS.ITCS.2019.59."},"page":"59:1-59:25","volume":124,"quality_controlled":"1","has_accepted_license":"1","date_updated":"2021-01-12T08:13:26Z","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"abstract":[{"text":"Proofs of space (PoS) [Dziembowski et al., CRYPTO'15] are proof systems where a prover can convince a verifier that he \"wastes\" disk space. PoS were introduced as a more ecological and economical replacement for proofs of work which are currently used to secure blockchains like Bitcoin. In this work we investigate extensions of PoS which allow the prover to embed useful data into the dedicated space, which later can be recovered. Our first contribution is a security proof for the original PoS from CRYPTO'15 in the random oracle model (the original proof only applied to a restricted class of adversaries which can store a subset of the data an honest prover would store). When this PoS is instantiated with recent constructions of maximally depth robust graphs, our proof implies basically optimal security. As a second contribution we show three different extensions of this PoS where useful data can be embedded into the space required by the prover. Our security proof for the PoS extends (non-trivially) to these constructions. We discuss how some of these variants can be used as proofs of catalytic space (PoCS), a notion we put forward in this work, and which basically is a PoS where most of the space required by the prover can be used to backup useful data. Finally we discuss how one of the extensions is a candidate construction for a proof of replication (PoR), a proof system recently suggested in the Filecoin whitepaper. ","lang":"eng"}],"department":[{"_id":"KrPi"}],"publisher":"Schloss Dagstuhl - Leibniz-Zentrum für Informatik","conference":{"name":"ITCS: Innovations in theoretical Computer Science Conference","start_date":"2019-01-10","location":"San Diego, CA, United States","end_date":"2019-01-12"},"_id":"7407","year":"2018","type":"conference","author":[{"id":"3E04A7AA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9139-1654","full_name":"Pietrzak, Krzysztof Z","first_name":"Krzysztof Z","last_name":"Pietrzak"}],"publication_status":"published","project":[{"name":"Teaching Old Crypto New Tricks","_id":"258AA5B2-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"682815"}],"month":"12","ec_funded":1,"date_created":"2020-01-30T09:16:05Z","intvolume":" 124","oa":1,"day":"31","scopus_import":1,"file":[{"date_updated":"2020-07-14T12:47:57Z","access_level":"open_access","file_id":"7443","checksum":"5cebb7f7849a3beda898f697d755dd96","relation":"main_file","content_type":"application/pdf","file_name":"2018_LIPIcs_Pietrzak.pdf","file_size":822884,"date_created":"2020-02-04T08:17:52Z","creator":"dernst"}],"publication_identifier":{"isbn":["978-3-95977-095-8"],"issn":["1868-8969"]},"oa_version":"Published Version","doi":"10.4230/LIPICS.ITCS.2019.59","file_date_updated":"2020-07-14T12:47:57Z","main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2018/194"}],"article_processing_charge":"No","title":"Proofs of catalytic space","publication":"10th Innovations in Theoretical Computer Science Conference (ITCS 2019)","language":[{"iso":"eng"}],"date_published":"2018-12-31T00:00:00Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","alternative_title":["LIPIcs"],"ddc":["000"],"status":"public"},{"volume":195,"pubrep_id":"912","page":"307–317","citation":{"ama":"Dotterrer D, Kaufman T, Wagner U. On expansion and topological overlap. Geometriae Dedicata. 2018;195(1):307–317. doi:10.1007/s10711-017-0291-4","chicago":"Dotterrer, Dominic, Tali Kaufman, and Uli Wagner. “On Expansion and Topological Overlap.” Geometriae Dedicata. Springer, 2018. https://doi.org/10.1007/s10711-017-0291-4.","short":"D. Dotterrer, T. Kaufman, U. Wagner, Geometriae Dedicata 195 (2018) 307–317.","ieee":"D. Dotterrer, T. Kaufman, and U. Wagner, “On expansion and topological overlap,” Geometriae Dedicata, vol. 195, no. 1. Springer, pp. 307–317, 2018.","mla":"Dotterrer, Dominic, et al. “On Expansion and Topological Overlap.” Geometriae Dedicata, vol. 195, no. 1, Springer, 2018, pp. 307–317, doi:10.1007/s10711-017-0291-4.","apa":"Dotterrer, D., Kaufman, T., & Wagner, U. (2018). On expansion and topological overlap. Geometriae Dedicata. Springer. https://doi.org/10.1007/s10711-017-0291-4","ista":"Dotterrer D, Kaufman T, Wagner U. 2018. On expansion and topological overlap. Geometriae Dedicata. 195(1), 307–317."},"publist_id":"6925","quality_controlled":"1","has_accepted_license":"1","abstract":[{"lang":"eng","text":"We give a detailed and easily accessible proof of Gromov’s Topological Overlap Theorem. Let X be a finite simplicial complex or, more generally, a finite polyhedral cell complex of dimension d. Informally, the theorem states that if X has sufficiently strong higher-dimensional expansion properties (which generalize edge expansion of graphs and are defined in terms of cellular cochains of X) then X has the following topological overlap property: for every continuous map (Formula presented.) there exists a point (Formula presented.) that is contained in the images of a positive fraction (Formula presented.) of the d-cells of X. More generally, the conclusion holds if (Formula presented.) is replaced by any d-dimensional piecewise-linear manifold M, with a constant (Formula presented.) that depends only on d and on the expansion properties of X, but not on M."}],"tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2023-09-27T12:29:57Z","department":[{"_id":"UlWa"}],"publisher":"Springer","year":"2018","_id":"742","related_material":{"record":[{"relation":"earlier_version","id":"1378","status":"public"}]},"type":"journal_article","author":[{"full_name":"Dotterrer, Dominic","first_name":"Dominic","last_name":"Dotterrer"},{"full_name":"Kaufman, Tali","first_name":"Tali","last_name":"Kaufman"},{"orcid":"0000-0002-1494-0568","id":"36690CA2-F248-11E8-B48F-1D18A9856A87","full_name":"Wagner, Uli","first_name":"Uli","last_name":"Wagner"}],"month":"08","isi":1,"project":[{"grant_number":"PP00P2_138948","name":"Embeddings in Higher Dimensions: Algorithms and Combinatorics","_id":"25FA3206-B435-11E9-9278-68D0E5697425"}],"publication_status":"published","date_created":"2018-12-11T11:48:16Z","intvolume":" 195","day":"01","oa":1,"issue":"1","scopus_import":"1","external_id":{"isi":["000437122700017"]},"file":[{"relation":"main_file","content_type":"application/pdf","access_level":"open_access","date_updated":"2020-07-14T12:47:58Z","file_id":"5835","checksum":"d2f70fc132156504aa4c626aa378a7ab","file_name":"s10711-017-0291-4.pdf","date_created":"2019-01-15T13:44:05Z","file_size":412486,"creator":"kschuh"}],"doi":"10.1007/s10711-017-0291-4","oa_version":"Published Version","file_date_updated":"2020-07-14T12:47:58Z","title":"On expansion and topological overlap","article_processing_charge":"Yes (via OA deal)","language":[{"iso":"eng"}],"publication":"Geometriae Dedicata","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","date_published":"2018-08-01T00:00:00Z","ddc":["514","516"],"status":"public"},{"day":"10","citation":{"apa":"Viehland, D., Li, J. F., Yang, Y., Costanzo, T., Yourdkhani, A., Caruntu, G., … Srinivasan, G. (2018). Tutorial: Product properties in multiferroic nanocomposites. Journal of Applied Physics. AIP. https://doi.org/10.1063/1.5038726","mla":"Viehland, Dwight, et al. “Tutorial: Product Properties in Multiferroic Nanocomposites.” Journal of Applied Physics, vol. 124, no. 6, 061101, AIP, 2018, doi:10.1063/1.5038726.","ama":"Viehland D, Li JF, Yang Y, et al. Tutorial: Product properties in multiferroic nanocomposites. Journal of Applied Physics. 2018;124(6). doi:10.1063/1.5038726","short":"D. Viehland, J.F. Li, Y. Yang, T. Costanzo, A. Yourdkhani, G. Caruntu, P. Zhou, T. Zhang, T. Li, A. Gupta, M. Popov, G. Srinivasan, Journal of Applied Physics 124 (2018).","chicago":"Viehland, Dwight, Jie Fang Li, Yaodong Yang, Tommaso Costanzo, Amin Yourdkhani, Gabriel Caruntu, Peng Zhou, et al. “Tutorial: Product Properties in Multiferroic Nanocomposites.” Journal of Applied Physics. AIP, 2018. https://doi.org/10.1063/1.5038726.","ieee":"D. Viehland et al., “Tutorial: Product properties in multiferroic nanocomposites,” Journal of Applied Physics, vol. 124, no. 6. AIP, 2018.","ista":"Viehland D, Li JF, Yang Y, Costanzo T, Yourdkhani A, Caruntu G, Zhou P, Zhang T, Li T, Gupta A, Popov M, Srinivasan G. 2018. Tutorial: Product properties in multiferroic nanocomposites. Journal of Applied Physics. 124(6), 061101."},"volume":124,"quality_controlled":"1","abstract":[{"lang":"eng","text":"The coupling between magnetic and electric subsystems in composites of ferromagnetic and ferroelectric phases is a product property that is facilitated by mechanical strain that arises due to magnetostriction and the piezoelectric effect in the constituent phases. Such multiferroic composites are of immense interests for studies on the physics of electromagnetic coupling and for use in a variety of applications. Here, we focus on magneto-electric (ME) coupling in nanocomposites. Particular emphasis is on core-shell particles and coaxial fibers, thin film heterostructures, and planar structures with a variety of mechanical connectivity. A brief review of models that predict strong ME effects in nanostructures is followed by synthesis and characterization. Core-shell particulate composites can be prepared by hydrothermal processes and chemical or deoxyribonucleic acid-assisted assembly. Electrospinning techniques have been utilized to prepare defect free core-shell nanofibers. Core-shell particles and fibers can be assembled into superstructures with the aid of magnetic and electric fields and characterized for possible use in advanced technologies. Chemical-vapor deposition techniques have been shown to be effective for the preparation of heterostructures of ferrites and ferroelectrics. Exotic planar multiferroic structures with potential for enhancing ME coupling strengths are also considered. Scanning probe microscopy techniques are ideal for probing the nature of direct- and converse-ME coupling in individual nanostructures. Magnetoelectric characterization of assemblies of nanocomposites can be done by ME voltage coefficient, magnetic field induced polarization, and magneto-dielectric effects. We conclude with a brief discussion on possible avenues for strengthening the product properties in the nanocomposites."}],"date_updated":"2023-02-23T13:08:29Z","issue":"6","publication_identifier":{"issn":["0021-8979","1089-7550"]},"doi":"10.1063/1.5038726","extern":"1","publisher":"AIP","oa_version":"None","_id":"7458","year":"2018","article_number":"061101","type":"journal_article","title":"Tutorial: Product properties in multiferroic nanocomposites","article_processing_charge":"No","language":[{"iso":"eng"}],"publication":"Journal of Applied Physics","author":[{"full_name":"Viehland, Dwight","first_name":"Dwight","last_name":"Viehland"},{"last_name":"Li","first_name":"Jie Fang","full_name":"Li, Jie Fang"},{"last_name":"Yang","first_name":"Yaodong","full_name":"Yang, Yaodong"},{"first_name":"Tommaso","last_name":"Costanzo","full_name":"Costanzo, Tommaso","id":"D93824F4-D9BA-11E9-BB12-F207E6697425","orcid":"0000-0001-9732-3815"},{"last_name":"Yourdkhani","first_name":"Amin","full_name":"Yourdkhani, Amin"},{"first_name":"Gabriel","last_name":"Caruntu","full_name":"Caruntu, Gabriel"},{"full_name":"Zhou, Peng","last_name":"Zhou","first_name":"Peng"},{"last_name":"Zhang","first_name":"Tianjin","full_name":"Zhang, Tianjin"},{"first_name":"Tianqian","last_name":"Li","full_name":"Li, Tianqian"},{"first_name":"Arunava","last_name":"Gupta","full_name":"Gupta, Arunava"},{"first_name":"Maksym","last_name":"Popov","full_name":"Popov, Maksym"},{"full_name":"Srinivasan, Gopalan","last_name":"Srinivasan","first_name":"Gopalan"}],"article_type":"original","month":"08","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_status":"published","date_published":"2018-08-10T00:00:00Z","date_created":"2020-02-05T14:18:22Z","intvolume":" 124","status":"public"},{"external_id":{"arxiv":["1804.03057"]},"department":[{"_id":"HeEd"},{"_id":"JaMa"}],"publisher":"arXiv","oa_version":"Preprint","doi":"10.48550/arXiv.1804.03057","citation":{"apa":"Akopyan, A., Avvakumov, S., & Karasev, R. (2018). Convex fair partitions into arbitrary number of pieces. arXiv. https://doi.org/10.48550/arXiv.1804.03057","mla":"Akopyan, Arseniy, et al. Convex Fair Partitions into Arbitrary Number of Pieces. 1804.03057, arXiv, 2018, doi:10.48550/arXiv.1804.03057.","short":"A. Akopyan, S. Avvakumov, R. Karasev, (2018).","ama":"Akopyan A, Avvakumov S, Karasev R. Convex fair partitions into arbitrary number of pieces. 2018. doi:10.48550/arXiv.1804.03057","ieee":"A. Akopyan, S. Avvakumov, and R. Karasev, “Convex fair partitions into arbitrary number of pieces.” arXiv, 2018.","chicago":"Akopyan, Arseniy, Sergey Avvakumov, and Roman Karasev. “Convex Fair Partitions into Arbitrary Number of Pieces.” arXiv, 2018. https://doi.org/10.48550/arXiv.1804.03057.","ista":"Akopyan A, Avvakumov S, Karasev R. 2018. Convex fair partitions into arbitrary number of pieces. 1804.03057."},"oa":1,"day":"13","date_updated":"2023-12-18T10:51:02Z","abstract":[{"text":"We prove that any convex body in the plane can be partitioned into m convex parts of equal areas and perimeters for any integer m≥2; this result was previously known for prime powers m=pk. We also give a higher-dimensional generalization.","lang":"eng"}],"author":[{"last_name":"Akopyan","first_name":"Arseniy","full_name":"Akopyan, Arseniy","id":"430D2C90-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-2548-617X"},{"first_name":"Sergey","last_name":"Avvakumov","full_name":"Avvakumov, Sergey","id":"3827DAC8-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Karasev, Roman","last_name":"Karasev","first_name":"Roman"}],"date_published":"2018-09-13T00:00:00Z","publication_status":"published","project":[{"_id":"256E75B8-B435-11E9-9278-68D0E5697425","name":"Optimal Transport and Stochastic Dynamics","call_identifier":"H2020","grant_number":"716117"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","month":"09","ec_funded":1,"date_created":"2018-12-11T11:44:30Z","status":"public","year":"2018","_id":"75","type":"preprint","main_file_link":[{"url":"https://arxiv.org/abs/1804.03057","open_access":"1"}],"article_number":"1804.03057","related_material":{"record":[{"relation":"dissertation_contains","id":"8156","status":"public"}]},"article_processing_charge":"No","title":"Convex fair partitions into arbitrary number of pieces","arxiv":1,"language":[{"iso":"eng"}]},{"external_id":{"isi":["000475627800005"]},"scopus_import":"1","file":[{"creator":"dernst","file_size":799337,"date_created":"2018-12-17T14:21:22Z","file_name":"2018_DistributedComputing_Lenzen.pdf","access_level":"open_access","date_updated":"2020-07-14T12:48:01Z","file_id":"5711","checksum":"872db70bba9b401500abe3c6ae2f1a61","content_type":"application/pdf","relation":"main_file"}],"oa_version":"Published Version","doi":"10.1007/s00446-018-0342-6","oa":1,"day":"12","date_published":"2018-09-12T00:00:00Z","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","ddc":["000"],"status":"public","file_date_updated":"2020-07-14T12:48:01Z","title":"Near-optimal self-stabilising counting and firing squads","article_processing_charge":"Yes (via OA deal)","publication":"Distributed Computing","language":[{"iso":"eng"}],"department":[{"_id":"DaAl"}],"publisher":"Springer","citation":{"ista":"Lenzen C, Rybicki J. 2018. Near-optimal self-stabilising counting and firing squads. Distributed Computing.","apa":"Lenzen, C., & Rybicki, J. (2018). Near-optimal self-stabilising counting and firing squads. Distributed Computing. Springer. https://doi.org/10.1007/s00446-018-0342-6","mla":"Lenzen, Christoph, and Joel Rybicki. “Near-Optimal Self-Stabilising Counting and Firing Squads.” Distributed Computing, Springer, 2018, doi:10.1007/s00446-018-0342-6.","chicago":"Lenzen, Christoph, and Joel Rybicki. “Near-Optimal Self-Stabilising Counting and Firing Squads.” Distributed Computing. Springer, 2018. https://doi.org/10.1007/s00446-018-0342-6.","ieee":"C. Lenzen and J. Rybicki, “Near-optimal self-stabilising counting and firing squads,” Distributed Computing. Springer, 2018.","short":"C. Lenzen, J. Rybicki, Distributed Computing (2018).","ama":"Lenzen C, Rybicki J. Near-optimal self-stabilising counting and firing squads. Distributed Computing. 2018. doi:10.1007/s00446-018-0342-6"},"has_accepted_license":"1","publist_id":"7978","quality_controlled":"1","tmp":{"short":"CC BY (4.0)","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode"},"date_updated":"2023-09-13T09:01:06Z","abstract":[{"lang":"eng","text":"Consider a fully-connected synchronous distributed system consisting of n nodes, where up to f nodes may be faulty and every node starts in an arbitrary initial state. In the synchronous C-counting problem, all nodes need to eventually agree on a counter that is increased by one modulo C in each round for given C>1. In the self-stabilising firing squad problem, the task is to eventually guarantee that all non-faulty nodes have simultaneous responses to external inputs: if a subset of the correct nodes receive an external “go” signal as input, then all correct nodes should agree on a round (in the not-too-distant future) in which to jointly output a “fire” signal. Moreover, no node should generate a “fire” signal without some correct node having previously received a “go” signal as input. We present a framework reducing both tasks to binary consensus at very small cost. For example, we obtain a deterministic algorithm for self-stabilising Byzantine firing squads with optimal resilience f<n/3, asymptotically optimal stabilisation and response time O(f), and message size O(log f). As our framework does not restrict the type of consensus routines used, we also obtain efficient randomised solutions."}],"author":[{"last_name":"Lenzen","first_name":"Christoph","full_name":"Lenzen, Christoph"},{"id":"334EFD2E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6432-6646","first_name":"Joel","last_name":"Rybicki","full_name":"Rybicki, Joel"}],"project":[{"name":"IST Austria Open Access Fund","_id":"B67AFEDC-15C9-11EA-A837-991A96BB2854"}],"publication_status":"published","isi":1,"month":"09","date_created":"2018-12-11T11:44:30Z","year":"2018","_id":"76","type":"journal_article"}]