---
_id: '7058'
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.
article_number: '205110 '
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: A.
full_name: Shekhter, A.
last_name: Shekhter
- first_name: C. M.
full_name: Varma, C. M.
last_name: Varma
citation:
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
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
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.
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.
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.
short: K.A. Modic, B.J. Ramshaw, A. Shekhter, C.M. Varma, Physical Review B 98 (2018).
date_created: 2019-11-19T13:01:31Z
date_published: 2018-11-05T00:00:00Z
date_updated: 2021-01-12T08:11:36Z
day: '05'
doi: 10.1103/physrevb.98.205110
extern: '1'
external_id:
arxiv:
- '1807.06637'
intvolume: ' 98'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1807.06637
month: '11'
oa: 1
oa_version: Preprint
publication: Physical Review B
publication_identifier:
eissn:
- 2469-9969
issn:
- 2469-9950
publication_status: published
publisher: APS
quality_controlled: '1'
status: public
title: Chiral spin order in some purported Kitaev spin-liquid compounds
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 98
year: '2018'
...
---
_id: '7059'
abstract:
- lang: eng
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.
article_processing_charge: No
article_type: original
author:
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: Maja D.
full_name: Bachmann, Maja D.
last_name: Bachmann
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: F.
full_name: Arnold, F.
last_name: Arnold
- first_name: K. R.
full_name: Shirer, K. R.
last_name: Shirer
- first_name: Amelia
full_name: Estry, Amelia
last_name: Estry
- first_name: J. B.
full_name: Betts, J. B.
last_name: Betts
- first_name: Nirmal J.
full_name: Ghimire, Nirmal J.
last_name: Ghimire
- first_name: E. D.
full_name: Bauer, E. D.
last_name: Bauer
- first_name: Marcus
full_name: Schmidt, Marcus
last_name: Schmidt
- first_name: Michael
full_name: Baenitz, Michael
last_name: Baenitz
- first_name: E.
full_name: Svanidze, E.
last_name: Svanidze
- first_name: Ross D.
full_name: McDonald, Ross D.
last_name: McDonald
- first_name: Arkady
full_name: Shekhter, Arkady
last_name: Shekhter
- first_name: Philip J. W.
full_name: Moll, Philip J. W.
last_name: Moll
citation:
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
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
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.
ieee: K. A. Modic et al., “Resonant torsion magnetometry in anisotropic quantum
materials,” Nature Communications, vol. 9, no. 1. Springer Nature, p. 3975,
2018.
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.
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.
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.
date_created: 2019-11-19T13:02:20Z
date_published: 2018-09-28T00:00:00Z
date_updated: 2021-01-12T08:11:37Z
day: '28'
ddc:
- '530'
doi: 10.1038/s41467-018-06412-w
extern: '1'
file:
- access_level: open_access
checksum: 46a313c816e66899d4dad2cf3583e5b0
content_type: application/pdf
creator: dernst
date_created: 2019-11-20T12:48:58Z
date_updated: 2020-07-14T12:47:48Z
file_id: '7088'
file_name: 2018_NatureComm_Modic.pdf
file_size: 1257681
relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '1'
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
page: '3975'
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Resonant torsion magnetometry in anisotropic quantum materials
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2018'
...
---
_id: '7060'
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.
article_processing_charge: No
article_type: original
author:
- first_name: P.
full_name: Giraldo-Gallo, P.
last_name: Giraldo-Gallo
- first_name: J. A.
full_name: Galvis, J. A.
last_name: Galvis
- first_name: Z.
full_name: Stegen, Z.
last_name: Stegen
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: F. F.
full_name: Balakirev, F. F.
last_name: Balakirev
- first_name: J. B.
full_name: Betts, J. B.
last_name: Betts
- first_name: X.
full_name: Lian, X.
last_name: Lian
- first_name: C.
full_name: Moir, C.
last_name: Moir
- first_name: S. C.
full_name: Riggs, S. C.
last_name: Riggs
- first_name: J.
full_name: Wu, J.
last_name: Wu
- first_name: A. T.
full_name: Bollinger, A. T.
last_name: Bollinger
- first_name: X.
full_name: He, X.
last_name: He
- first_name: I.
full_name: Božović, I.
last_name: Božović
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: R. D.
full_name: McDonald, R. D.
last_name: McDonald
- first_name: G. S.
full_name: Boebinger, G. S.
last_name: Boebinger
- first_name: A.
full_name: Shekhter, A.
last_name: Shekhter
citation:
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
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
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.
ieee: P. Giraldo-Gallo et al., “Scale-invariant magnetoresistance in a cuprate
superconductor,” Science, vol. 361, no. 6401. AAAS, pp. 479–481, 2018.
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.
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.
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.
date_created: 2019-11-19T13:03:16Z
date_published: 2018-08-03T00:00:00Z
date_updated: 2021-01-12T08:11:37Z
day: '03'
doi: 10.1126/science.aan3178
extern: '1'
intvolume: ' 361'
issue: '6401'
language:
- iso: eng
month: '08'
oa_version: None
page: 479-481
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: AAAS
quality_controlled: '1'
status: public
title: Scale-invariant magnetoresistance in a cuprate superconductor
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 361
year: '2018'
...
---
_id: '7062'
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.'
article_number: '2217'
article_processing_charge: No
article_type: original
author:
- first_name: B. J.
full_name: Ramshaw, B. J.
last_name: Ramshaw
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: Arkady
full_name: Shekhter, Arkady
last_name: Shekhter
- first_name: Yi
full_name: Zhang, Yi
last_name: Zhang
- first_name: Eun-Ah
full_name: Kim, Eun-Ah
last_name: Kim
- first_name: Philip J. W.
full_name: Moll, Philip J. W.
last_name: Moll
- first_name: Maja D.
full_name: Bachmann, Maja D.
last_name: Bachmann
- first_name: M. K.
full_name: Chan, M. K.
last_name: Chan
- first_name: J. B.
full_name: Betts, J. B.
last_name: Betts
- first_name: F.
full_name: Balakirev, F.
last_name: Balakirev
- first_name: A.
full_name: Migliori, A.
last_name: Migliori
- first_name: N. J.
full_name: Ghimire, N. J.
last_name: Ghimire
- first_name: E. D.
full_name: Bauer, E. D.
last_name: Bauer
- first_name: F.
full_name: Ronning, F.
last_name: Ronning
- first_name: R. D.
full_name: McDonald, R. D.
last_name: McDonald
citation:
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
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.
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.
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.
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.
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).
date_created: 2019-11-19T13:10:33Z
date_published: 2018-06-07T00:00:00Z
date_updated: 2021-01-12T08:11:38Z
day: '07'
ddc:
- '530'
doi: 10.1038/s41467-018-04542-9
extern: '1'
file:
- access_level: open_access
checksum: 9c53f9a1f06a4d83d5fe879d2478b7d7
content_type: application/pdf
creator: dernst
date_created: 2019-11-20T13:55:44Z
date_updated: 2020-07-14T12:47:48Z
file_id: '7089'
file_name: 2018_NatureComm_Ramshaw.pdf
file_size: 1794797
relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: ' 9'
issue: '1'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Quantum limit transport and destruction of the Weyl nodes in TaAs
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 9
year: '2018'
...
---
_id: '7063'
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.
article_processing_charge: No
article_type: original
author:
- first_name: Edoardo
full_name: Martino, Edoardo
last_name: Martino
- first_name: Alla
full_name: Arakcheeva, Alla
last_name: Arakcheeva
- first_name: Gabriel
full_name: Autès, Gabriel
last_name: Autès
- first_name: Andrea
full_name: Pisoni, Andrea
last_name: Pisoni
- first_name: Maja D.
full_name: Bachmann, Maja D.
last_name: Bachmann
- first_name: Kimberly A
full_name: Modic, Kimberly A
id: 13C26AC0-EB69-11E9-87C6-5F3BE6697425
last_name: Modic
orcid: 0000-0001-9760-3147
- first_name: Toni
full_name: Helm, Toni
last_name: Helm
- first_name: Oleg V.
full_name: Yazyev, Oleg V.
last_name: Yazyev
- first_name: Philip J. W.
full_name: Moll, Philip J. W.
last_name: Moll
- first_name: László
full_name: Forró, László
last_name: Forró
- first_name: Sergiy
full_name: Katrych, Sergiy
last_name: Katrych
citation:
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'
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'
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.'
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.'
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.'
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.'
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.
date_created: 2019-11-19T13:11:15Z
date_published: 2018-07-01T00:00:00Z
date_updated: 2021-01-12T08:11:38Z
day: '01'
ddc:
- '530'
doi: 10.1107/s2052252518007303
extern: '1'
file:
- access_level: open_access
checksum: 5c6180c7d19da599dd50a067eb2efd50
content_type: application/pdf
creator: dernst
date_created: 2019-11-20T14:00:27Z
date_updated: 2020-07-14T12:47:48Z
file_id: '7090'
file_name: 2018_IUCrJ_Martino.pdf
file_size: 1563353
relation: main_file
file_date_updated: 2020-07-14T12:47:48Z
has_accepted_license: '1'
intvolume: ' 5'
issue: '4'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 470-477
publication: IUCrJ
publication_identifier:
eissn:
- 2052-2525
publication_status: published
publisher: International Union of Crystallography (IUCr)
quality_controlled: '1'
status: public
title: 'Sr2Pt8−xAs: A layered incommensurately modulated metal with saturated resistivity'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2018'
...
---
_id: '7116'
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.'
article_processing_charge: No
author:
- first_name: Demjan
full_name: Grubic, Demjan
last_name: Grubic
- first_name: Leo
full_name: Tam, Leo
last_name: Tam
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
- first_name: Ce
full_name: Zhang, Ce
last_name: Zhang
citation:
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'
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'
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.'
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.'
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.'
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.'
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.
conference:
end_date: 2018-03-29
location: Vienna, Austria
name: 'EDBT: Conference on Extending Database Technology'
start_date: 2018-03-26
date_created: 2019-11-26T14:19:11Z
date_published: 2018-03-26T00:00:00Z
date_updated: 2023-02-23T12:59:17Z
day: '26'
ddc:
- '000'
department:
- _id: DaAl
doi: 10.5441/002/EDBT.2018.14
file:
- access_level: open_access
checksum: ec979b56abc71016d6e6adfdadbb4afe
content_type: application/pdf
creator: dernst
date_created: 2019-11-26T14:23:04Z
date_updated: 2020-07-14T12:47:49Z
file_id: '7118'
file_name: 2018_OpenProceedings_Grubic.pdf
file_size: 1603204
relation: main_file
file_date_updated: 2020-07-14T12:47:49Z
has_accepted_license: '1'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 145-156
publication: Proceedings of the 21st International Conference on Extending Database
Technology
publication_identifier:
isbn:
- '9783893180783'
issn:
- 2367-2005
publication_status: published
publisher: OpenProceedings
quality_controlled: '1'
scopus_import: 1
status: public
title: 'Synchronous multi-GPU training for deep learning with low-precision communications:
An empirical study'
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2018'
...
---
_id: '7123'
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."
article_processing_charge: No
arxiv: 1
author:
- first_name: Dan-Adrian
full_name: Alistarh, Dan-Adrian
id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
last_name: Alistarh
orcid: 0000-0003-3650-940X
- first_name: James
full_name: Aspnes, James
last_name: Aspnes
- first_name: Rati
full_name: Gelashvili, Rati
last_name: Gelashvili
citation:
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'
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'
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.
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.
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.
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.
conference:
end_date: 2018-01-10
location: New Orleans, LA, United States
name: 'SODA: Symposium on Discrete Algorithms'
start_date: 2018-01-07
date_created: 2019-11-26T15:10:55Z
date_published: 2018-01-30T00:00:00Z
date_updated: 2023-09-19T15:03:16Z
day: '30'
department:
- _id: DaAl
doi: 10.1137/1.9781611975031.144
external_id:
arxiv:
- '1704.04947'
isi:
- '000483921200145'
isi: 1
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1704.04947
month: '01'
oa: 1
oa_version: Preprint
page: 2221-2239
publication: Proceedings of the 29th Annual ACM-SIAM Symposium on Discrete Algorithms
publication_identifier:
isbn:
- '9781611975031'
publication_status: published
publisher: ACM
quality_controlled: '1'
status: public
title: Space-optimal majority in population protocols
type: conference
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...
---
_id: '7126'
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.
article_number: '755'
article_processing_charge: No
article_type: original
author:
- first_name: Ryan J
full_name: Cubero, Ryan J
id: 850B2E12-9CD4-11E9-837F-E719E6697425
last_name: Cubero
orcid: 0000-0003-0002-1867
- first_name: Matteo
full_name: Marsili, Matteo
last_name: Marsili
- first_name: Yasser
full_name: Roudi, Yasser
last_name: Roudi
citation:
ama: Cubero RJ, Marsili M, Roudi Y. Minimum description length codes are critical.
Entropy. 2018;20(10). doi:10.3390/e20100755
apa: Cubero, R. J., Marsili, M., & Roudi, Y. (2018). Minimum description length
codes are critical. Entropy. MDPI. https://doi.org/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.
ieee: R. J. Cubero, M. Marsili, and Y. Roudi, “Minimum description length codes
are critical,” Entropy, vol. 20, no. 10. MDPI, 2018.
ista: Cubero RJ, Marsili M, Roudi Y. 2018. Minimum description length codes are
critical. Entropy. 20(10), 755.
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).
date_created: 2019-11-26T22:18:05Z
date_published: 2018-10-01T00:00:00Z
date_updated: 2021-01-12T08:11:56Z
day: '01'
ddc:
- '519'
doi: 10.3390/e20100755
extern: '1'
file:
- access_level: open_access
checksum: d642b7b661e1d5066b62e6ea9986b917
content_type: application/pdf
creator: rcubero
date_created: 2019-11-26T22:23:08Z
date_updated: 2020-07-14T12:47:50Z
file_id: '7127'
file_name: entropy-20-00755-v2.pdf
file_size: 1366813
relation: main_file
file_date_updated: 2020-07-14T12:47:50Z
has_accepted_license: '1'
intvolume: ' 20'
issue: '10'
keyword:
- Minimum Description Length
- normalized maximum likelihood
- statistical criticality
- phase transitions
- large deviations
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Entropy
publication_identifier:
issn:
- 1099-4300
publication_status: published
publisher: MDPI
quality_controlled: '1'
status: public
title: Minimum description length codes are critical
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 20
year: '2018'
...
---
_id: '723'
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.
article_processing_charge: No
author:
- first_name: Pietro
full_name: Oliveto, Pietro
last_name: Oliveto
- first_name: Tiago
full_name: Paixao, Tiago
id: 2C5658E6-F248-11E8-B48F-1D18A9856A87
last_name: Paixao
orcid: 0000-0003-2361-3953
- first_name: Jorge
full_name: Pérez Heredia, Jorge
last_name: Pérez Heredia
- first_name: Dirk
full_name: Sudholt, Dirk
last_name: Sudholt
- first_name: Barbora
full_name: Trubenova, Barbora
id: 42302D54-F248-11E8-B48F-1D18A9856A87
last_name: Trubenova
orcid: 0000-0002-6873-2967
citation:
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
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
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.
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.
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.
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.
short: P. Oliveto, T. Paixao, J. Pérez Heredia, D. Sudholt, B. Trubenova, Algorithmica
80 (2018) 1604–1633.
date_created: 2018-12-11T11:48:09Z
date_published: 2018-05-01T00:00:00Z
date_updated: 2023-09-11T14:11:35Z
day: '01'
ddc:
- '576'
department:
- _id: NiBa
- _id: CaGu
doi: 10.1007/s00453-017-0369-2
ec_funded: 1
external_id:
isi:
- '000428239300010'
file:
- access_level: open_access
checksum: 7d92f5d7be81e387edeec4f06442791c
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:08:14Z
date_updated: 2020-07-14T12:47:54Z
file_id: '4674'
file_name: IST-2018-1014-v1+1_2018_Paixao_Escape.pdf
file_size: 691245
relation: main_file
file_date_updated: 2020-07-14T12:47:54Z
has_accepted_license: '1'
intvolume: ' 80'
isi: 1
issue: '5'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
page: 1604 - 1633
project:
- _id: 25B1EC9E-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '618091'
name: Speed of Adaptation in Population Genetics and Evolutionary Computation
publication: Algorithmica
publication_status: published
publisher: Springer
publist_id: '6957'
pubrep_id: '1014'
quality_controlled: '1'
scopus_import: '1'
status: public
title: How to escape local optima in black box optimisation when non elitism outperforms
elitism
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 80
year: '2018'
...
---
_id: '7271'
abstract:
- lang: eng
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.
article_processing_charge: No
article_type: original
author:
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: John
full_name: McCracken, John
last_name: McCracken
- first_name: Aurelian
full_name: Rotaru, Aurelian
last_name: Rotaru
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
citation:
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
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.
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.
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.
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.
short: T. Costanzo, J. McCracken, A. Rotaru, G. Caruntu, ACS Applied Nano Materials
1 (2018) 4863–4874.
date_created: 2020-01-13T21:58:27Z
date_published: 2018-09-28T00:00:00Z
date_updated: 2023-02-23T13:02:57Z
day: '28'
doi: 10.1021/acsanm.8b01036
extern: '1'
intvolume: ' 1'
issue: '9'
language:
- iso: eng
month: '09'
oa_version: None
page: 4863-4874
publication: ACS Applied Nano Materials
publication_identifier:
issn:
- 2574-0970
publication_status: published
publisher: ACS
quality_controlled: '1'
status: public
title: Quasi-monodisperse transition-metal-doped BaTiO3 (M = Cr, Mn, Fe, Co) colloidal
nanocrystals with multiferroic properties
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 1
year: '2018'
...
---
_id: '7277'
abstract:
- lang: eng
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.'
article_processing_charge: No
article_type: original
author:
- first_name: Nika
full_name: Mahne, Nika
last_name: Mahne
- first_name: Sara E.
full_name: Renfrew, Sara E.
last_name: Renfrew
- first_name: Bryan D.
full_name: McCloskey, Bryan D.
last_name: McCloskey
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
citation:
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
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
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.
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.
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.
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.
short: N. Mahne, S.E. Renfrew, B.D. McCloskey, S.A. Freunberger, Angewandte Chemie
International Edition 57 (2018) 5529–5533.
date_created: 2020-01-15T07:20:09Z
date_published: 2018-03-15T00:00:00Z
date_updated: 2021-01-12T08:12:42Z
day: '15'
ddc:
- '540'
doi: 10.1002/anie.201802277
extern: '1'
file:
- access_level: open_access
checksum: 45868d0adc2d13a506bb9a59eb4f409c
content_type: application/pdf
creator: dernst
date_created: 2020-01-22T16:28:31Z
date_updated: 2020-07-14T12:47:55Z
file_id: '7357'
file_name: 2018_AngewChemie_Mahne.pdf
file_size: 657963
relation: main_file
file_date_updated: 2020-07-14T12:47:55Z
has_accepted_license: '1'
intvolume: ' 57'
issue: '19'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 5529-5533
publication: Angewandte Chemie International Edition
publication_identifier:
issn:
- 1433-7851
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Electrochemical oxidation of Lithium Carbonate generates singlet oxygen
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2018'
...
---
_id: '7285'
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.
article_processing_charge: No
article_type: original
author:
- first_name: Max
full_name: Burian, Max
last_name: Burian
- first_name: Francesco
full_name: Rigodanza, Francesco
last_name: Rigodanza
- first_name: Nicola
full_name: Demitri, Nicola
last_name: Demitri
- first_name: Luka
full_name: D̵ord̵ević, Luka
last_name: D̵ord̵ević
- first_name: Silvia
full_name: Marchesan, Silvia
last_name: Marchesan
- first_name: Tereza
full_name: Steinhartova, Tereza
last_name: Steinhartova
- first_name: Ilse
full_name: Letofsky-Papst, Ilse
last_name: Letofsky-Papst
- first_name: Ivan
full_name: Khalakhan, Ivan
last_name: Khalakhan
- first_name: Eléonore
full_name: Mourad, Eléonore
last_name: Mourad
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Heinz
full_name: Amenitsch, Heinz
last_name: Amenitsch
- first_name: Maurizio
full_name: Prato, Maurizio
last_name: Prato
- first_name: Zois
full_name: Syrgiannis, Zois
last_name: Syrgiannis
citation:
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
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
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.
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.
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.
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.
date_created: 2020-01-15T12:13:25Z
date_published: 2018-06-05T00:00:00Z
date_updated: 2021-01-12T08:12:46Z
day: '05'
ddc:
- '540'
- '541'
doi: 10.1021/acsnano.8b01689
extern: '1'
file:
- access_level: open_access
checksum: 050f7f0ba5d845c5c71779ef14ad5ef3
content_type: application/pdf
creator: sfreunbe
date_created: 2020-06-29T14:56:40Z
date_updated: 2020-07-14T12:47:55Z
file_id: '8052'
file_name: Manuscript 20092017_subm.pdf
file_size: 1333353
relation: main_file
file_date_updated: 2020-07-14T12:47:55Z
has_accepted_license: '1'
intvolume: ' 12'
issue: '6'
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
page: 5800-5806
publication: ACS Nano
publication_identifier:
issn:
- 1936-0851
publication_status: published
publisher: ACS
quality_controlled: '1'
status: public
title: Inter-backbone charge transfer as prerequisite for long-range conductivity
in perylene bisimide hydrogels
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2018'
...
---
_id: '7286'
abstract:
- lang: eng
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.
article_processing_charge: No
article_type: original
author:
- first_name: Lukas
full_name: Schafzahl, Lukas
last_name: Schafzahl
- first_name: Heike
full_name: Ehmann, Heike
last_name: Ehmann
- first_name: Manfred
full_name: Kriechbaum, Manfred
last_name: Kriechbaum
- first_name: Jürgen
full_name: Sattelkow, Jürgen
last_name: Sattelkow
- first_name: Thomas
full_name: Ganner, Thomas
last_name: Ganner
- first_name: Harald
full_name: Plank, Harald
last_name: Plank
- first_name: Martin
full_name: Wilkening, Martin
last_name: Wilkening
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
citation:
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'
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'
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.'
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.'
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.'
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.'
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.
date_created: 2020-01-15T12:13:37Z
date_published: 2018-05-03T00:00:00Z
date_updated: 2021-01-12T08:12:46Z
day: '03'
doi: 10.1021/acs.chemmater.8b00750
extern: '1'
intvolume: ' 30'
issue: '10'
language:
- iso: eng
month: '05'
oa_version: None
page: 3338-3345
publication: Chemistry of Materials
publication_identifier:
eissn:
- 1520-5002
issn:
- 0897-4756
publication_status: published
publisher: ACS
quality_controlled: '1'
status: public
title: 'Long-chain Li and Na alkyl carbonates as solid electrolyte interphase components:
Structure, ion transport, and mechanical properties'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 30
year: '2018'
...
---
_id: '7287'
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.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Bettina
full_name: Schafzahl, Bettina
last_name: Schafzahl
- first_name: Eléonore
full_name: Mourad, Eléonore
last_name: Mourad
- first_name: Lukas
full_name: Schafzahl, Lukas
last_name: Schafzahl
- first_name: Yann K.
full_name: Petit, Yann K.
last_name: Petit
- first_name: Anjana R.
full_name: Raju, Anjana R.
last_name: Raju
- first_name: Musthafa Ottakam
full_name: Thotiyl, Musthafa Ottakam
last_name: Thotiyl
- first_name: Martin
full_name: Wilkening, Martin
last_name: Wilkening
- first_name: Christian
full_name: Slugovc, Christian
last_name: Slugovc
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
citation:
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
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.
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.
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.
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.
date_created: 2020-01-15T12:13:52Z
date_published: 2018-01-01T00:00:00Z
date_updated: 2021-01-12T08:12:46Z
day: '01'
ddc:
- '540'
- '543'
- '546'
- '547'
doi: 10.1021/acsenergylett.7b01111
extern: '1'
file:
- access_level: open_access
checksum: 461ccf575ba077af90314fe72d20521e
content_type: application/pdf
creator: sfreunbe
date_created: 2020-06-29T14:19:36Z
date_updated: 2020-07-14T12:47:55Z
file_id: '8049'
file_name: O2 TIOC_fin_incl_SI.pdf
file_size: 1892355
relation: main_file
file_date_updated: 2020-07-14T12:47:55Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Submitted Version
page: 170-176
publication: ACS Energy Letters
publication_identifier:
issn:
- 2380-8195
- 2380-8195
publication_status: published
publisher: ACS
quality_controlled: '1'
status: public
title: Quantifying total superoxide, peroxide, and carbonaceous compounds in metal–O2
batteries and the solid electrolyte interphase
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 3
year: '2018'
...
---
_id: '738'
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. '
article_processing_charge: No
author:
- first_name: Krishnendu
full_name: Chatterjee, Krishnendu
id: 2E5DCA20-F248-11E8-B48F-1D18A9856A87
last_name: Chatterjee
orcid: 0000-0002-4561-241X
- first_name: Andreas
full_name: Pavlogiannis, Andreas
id: 49704004-F248-11E8-B48F-1D18A9856A87
last_name: Pavlogiannis
orcid: 0000-0002-8943-0722
- first_name: Alexander
full_name: Kößler, Alexander
last_name: Kößler
- first_name: Ulrich
full_name: Schmid, Ulrich
last_name: Schmid
citation:
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
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.
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.
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.
short: K. Chatterjee, A. Pavlogiannis, A. Kößler, U. Schmid, Real-Time Systems 54
(2018) 166–207.
date_created: 2018-12-11T11:48:14Z
date_published: 2018-01-01T00:00:00Z
date_updated: 2023-09-27T12:52:38Z
day: '01'
ddc:
- '000'
department:
- _id: KrCh
doi: 10.1007/s11241-017-9293-4
ec_funded: 1
external_id:
isi:
- '000419955500006'
file:
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checksum: c2590ef160709d8054cf29ee173f1454
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:17:14Z
date_updated: 2020-07-14T12:47:56Z
file_id: '5267'
file_name: IST-2018-960-v1+1_2017_Chatterjee_Automated_competetive.pdf
file_size: 1163507
relation: main_file
file_date_updated: 2020-07-14T12:47:56Z
has_accepted_license: '1'
intvolume: ' 54'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 166 - 207
project:
- _id: 25832EC2-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S 11407_N23
name: Rigorous Systems Engineering
- _id: 25863FF4-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: S11407
name: Game Theory
- _id: 2584A770-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P 23499-N23
name: Modern Graph Algorithmic Techniques in Formal Verification
- _id: 2581B60A-B435-11E9-9278-68D0E5697425
call_identifier: FP7
grant_number: '279307'
name: 'Quantitative Graph Games: Theory and Applications'
- _id: 2587B514-B435-11E9-9278-68D0E5697425
name: Microsoft Research Faculty Fellowship
publication: Real-Time Systems
publication_status: published
publisher: Springer
publist_id: '6929'
pubrep_id: '960'
quality_controlled: '1'
related_material:
record:
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relation: earlier_version
status: public
scopus_import: '1'
status: public
title: Automated competitive analysis of real time scheduling with graph games
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 54
year: '2018'
...
---
_id: '7407'
abstract:
- lang: eng
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. '
alternative_title:
- LIPIcs
article_processing_charge: No
author:
- first_name: Krzysztof Z
full_name: Pietrzak, Krzysztof Z
id: 3E04A7AA-F248-11E8-B48F-1D18A9856A87
last_name: Pietrzak
orcid: 0000-0002-9139-1654
citation:
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'
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'
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.
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.
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.
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.
conference:
end_date: 2019-01-12
location: San Diego, CA, United States
name: 'ITCS: Innovations in theoretical Computer Science Conference'
start_date: 2019-01-10
date_created: 2020-01-30T09:16:05Z
date_published: 2018-12-31T00:00:00Z
date_updated: 2021-01-12T08:13:26Z
day: '31'
ddc:
- '000'
department:
- _id: KrPi
doi: 10.4230/LIPICS.ITCS.2019.59
ec_funded: 1
file:
- access_level: open_access
checksum: 5cebb7f7849a3beda898f697d755dd96
content_type: application/pdf
creator: dernst
date_created: 2020-02-04T08:17:52Z
date_updated: 2020-07-14T12:47:57Z
file_id: '7443'
file_name: 2018_LIPIcs_Pietrzak.pdf
file_size: 822884
relation: main_file
file_date_updated: 2020-07-14T12:47:57Z
has_accepted_license: '1'
intvolume: ' 124'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://eprint.iacr.org/2018/194
month: '12'
oa: 1
oa_version: Published Version
page: 59:1-59:25
project:
- _id: 258AA5B2-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '682815'
name: Teaching Old Crypto New Tricks
publication: 10th Innovations in Theoretical Computer Science Conference (ITCS 2019)
publication_identifier:
isbn:
- 978-3-95977-095-8
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: 1
status: public
title: Proofs of catalytic space
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 124
year: '2018'
...
---
_id: '742'
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.'
article_processing_charge: Yes (via OA deal)
author:
- first_name: Dominic
full_name: Dotterrer, Dominic
last_name: Dotterrer
- first_name: Tali
full_name: Kaufman, Tali
last_name: Kaufman
- first_name: Uli
full_name: Wagner, Uli
id: 36690CA2-F248-11E8-B48F-1D18A9856A87
last_name: Wagner
orcid: 0000-0002-1494-0568
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
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
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.
ieee: D. Dotterrer, T. Kaufman, and U. Wagner, “On expansion and topological overlap,”
Geometriae Dedicata, vol. 195, no. 1. Springer, pp. 307–317, 2018.
ista: Dotterrer D, Kaufman T, Wagner U. 2018. On expansion and topological overlap.
Geometriae Dedicata. 195(1), 307–317.
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.
short: D. Dotterrer, T. Kaufman, U. Wagner, Geometriae Dedicata 195 (2018) 307–317.
date_created: 2018-12-11T11:48:16Z
date_published: 2018-08-01T00:00:00Z
date_updated: 2023-09-27T12:29:57Z
day: '01'
ddc:
- '514'
- '516'
department:
- _id: UlWa
doi: 10.1007/s10711-017-0291-4
external_id:
isi:
- '000437122700017'
file:
- access_level: open_access
checksum: d2f70fc132156504aa4c626aa378a7ab
content_type: application/pdf
creator: kschuh
date_created: 2019-01-15T13:44:05Z
date_updated: 2020-07-14T12:47:58Z
file_id: '5835'
file_name: s10711-017-0291-4.pdf
file_size: 412486
relation: main_file
file_date_updated: 2020-07-14T12:47:58Z
has_accepted_license: '1'
intvolume: ' 195'
isi: 1
issue: '1'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 307–317
project:
- _id: 25FA3206-B435-11E9-9278-68D0E5697425
grant_number: PP00P2_138948
name: 'Embeddings in Higher Dimensions: Algorithms and Combinatorics'
publication: Geometriae Dedicata
publication_status: published
publisher: Springer
publist_id: '6925'
pubrep_id: '912'
quality_controlled: '1'
related_material:
record:
- id: '1378'
relation: earlier_version
status: public
scopus_import: '1'
status: public
title: On expansion and topological overlap
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 195
year: '2018'
...
---
_id: '7458'
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.
article_number: '061101'
article_processing_charge: No
article_type: original
author:
- first_name: Dwight
full_name: Viehland, Dwight
last_name: Viehland
- first_name: Jie Fang
full_name: Li, Jie Fang
last_name: Li
- first_name: Yaodong
full_name: Yang, Yaodong
last_name: Yang
- first_name: Tommaso
full_name: Costanzo, Tommaso
id: D93824F4-D9BA-11E9-BB12-F207E6697425
last_name: Costanzo
orcid: 0000-0001-9732-3815
- first_name: Amin
full_name: Yourdkhani, Amin
last_name: Yourdkhani
- first_name: Gabriel
full_name: Caruntu, Gabriel
last_name: Caruntu
- first_name: Peng
full_name: Zhou, Peng
last_name: Zhou
- first_name: Tianjin
full_name: Zhang, Tianjin
last_name: Zhang
- first_name: Tianqian
full_name: Li, Tianqian
last_name: Li
- first_name: Arunava
full_name: Gupta, Arunava
last_name: Gupta
- first_name: Maksym
full_name: Popov, Maksym
last_name: Popov
- first_name: Gopalan
full_name: Srinivasan, Gopalan
last_name: Srinivasan
citation:
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'
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'
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.'
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.'
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).
date_created: 2020-02-05T14:18:22Z
date_published: 2018-08-10T00:00:00Z
date_updated: 2023-02-23T13:08:29Z
day: '10'
doi: 10.1063/1.5038726
extern: '1'
intvolume: ' 124'
issue: '6'
language:
- iso: eng
month: '08'
oa_version: None
publication: Journal of Applied Physics
publication_identifier:
issn:
- 0021-8979
- 1089-7550
publication_status: published
publisher: AIP
quality_controlled: '1'
status: public
title: 'Tutorial: Product properties in multiferroic nanocomposites'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 124
year: '2018'
...
---
_id: '75'
abstract:
- lang: eng
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.
article_number: '1804.03057'
article_processing_charge: No
arxiv: 1
author:
- first_name: Arseniy
full_name: Akopyan, Arseniy
id: 430D2C90-F248-11E8-B48F-1D18A9856A87
last_name: Akopyan
orcid: 0000-0002-2548-617X
- first_name: Sergey
full_name: Avvakumov, Sergey
id: 3827DAC8-F248-11E8-B48F-1D18A9856A87
last_name: Avvakumov
- first_name: Roman
full_name: Karasev, Roman
last_name: Karasev
citation:
ama: Akopyan A, Avvakumov S, Karasev R. Convex fair partitions into arbitrary number
of pieces. 2018. doi:10.48550/arXiv.1804.03057
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
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.
ieee: A. Akopyan, S. Avvakumov, and R. Karasev, “Convex fair partitions into arbitrary
number of pieces.” arXiv, 2018.
ista: Akopyan A, Avvakumov S, Karasev R. 2018. Convex fair partitions into arbitrary
number of pieces. 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).
date_created: 2018-12-11T11:44:30Z
date_published: 2018-09-13T00:00:00Z
date_updated: 2023-12-18T10:51:02Z
day: '13'
department:
- _id: HeEd
- _id: JaMa
doi: 10.48550/arXiv.1804.03057
ec_funded: 1
external_id:
arxiv:
- '1804.03057'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1804.03057
month: '09'
oa: 1
oa_version: Preprint
project:
- _id: 256E75B8-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '716117'
name: Optimal Transport and Stochastic Dynamics
publication_status: published
publisher: arXiv
related_material:
record:
- id: '8156'
relation: dissertation_contains
status: public
status: public
title: Convex fair partitions into arbitrary number of pieces
type: preprint
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2018'
...
---
_id: '76'
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.'
article_processing_charge: Yes (via OA deal)
author:
- first_name: Christoph
full_name: Lenzen, Christoph
last_name: Lenzen
- first_name: Joel
full_name: Rybicki, Joel
id: 334EFD2E-F248-11E8-B48F-1D18A9856A87
last_name: Rybicki
orcid: 0000-0002-6432-6646
citation:
ama: Lenzen C, Rybicki J. Near-optimal self-stabilising counting and firing squads.
Distributed Computing. 2018. doi:10.1007/s00446-018-0342-6
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
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.
ista: Lenzen C, Rybicki J. 2018. Near-optimal self-stabilising counting and firing
squads. Distributed Computing.
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.
short: C. Lenzen, J. Rybicki, Distributed Computing (2018).
date_created: 2018-12-11T11:44:30Z
date_published: 2018-09-12T00:00:00Z
date_updated: 2023-09-13T09:01:06Z
day: '12'
ddc:
- '000'
department:
- _id: DaAl
doi: 10.1007/s00446-018-0342-6
external_id:
isi:
- '000475627800005'
file:
- access_level: open_access
checksum: 872db70bba9b401500abe3c6ae2f1a61
content_type: application/pdf
creator: dernst
date_created: 2018-12-17T14:21:22Z
date_updated: 2020-07-14T12:48:01Z
file_id: '5711'
file_name: 2018_DistributedComputing_Lenzen.pdf
file_size: 799337
relation: main_file
file_date_updated: 2020-07-14T12:48:01Z
has_accepted_license: '1'
isi: 1
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: B67AFEDC-15C9-11EA-A837-991A96BB2854
name: IST Austria Open Access Fund
publication: Distributed Computing
publication_status: published
publisher: Springer
publist_id: '7978'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Near-optimal self-stabilising counting and firing squads
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2018'
...