{"publication_status":"published","publication":"Physical Review X","article_number":"011013","abstract":[{"text":"Ultrafast lasers are an increasingly important tool to control and stabilize emergent phases in quantum materials. Among a variety of possible excitation protocols, a particularly intriguing route is the direct light engineering of microscopic electronic parameters, such as the electron hopping and the local Coulomb repulsion (Hubbard \r\nU). In this work, we use time-resolved x-ray absorption spectroscopy to demonstrate the light-induced renormalization of the Hubbard U in a cuprate superconductor, La1.905Ba0.095CuO4. We show that intense femtosecond laser pulses induce a substantial redshift of the upper Hubbard band while leaving the Zhang-Rice singlet energy unaffected. By comparing the experimental data to time-dependent spectra of single- and three-band Hubbard models, we assign this effect to an approximately 140-meV reduction of the on-site Coulomb repulsion on the copper sites. Our demonstration of a dynamical Hubbard U renormalization in a copper oxide paves the way to a novel strategy for the manipulation of superconductivity and magnetism as well as to the realization of other long-range-ordered phases in light-driven quantum materials.","lang":"eng"}],"_id":"13994","author":[{"full_name":"Baykusheva, Denitsa Rangelova","first_name":"Denitsa Rangelova","id":"71b4d059-2a03-11ee-914d-dfa3beed6530","last_name":"Baykusheva"},{"last_name":"Jang","first_name":"Hoyoung","full_name":"Jang, Hoyoung"},{"last_name":"Husain","first_name":"Ali A.","full_name":"Husain, Ali A."},{"last_name":"Lee","first_name":"Sangjun","full_name":"Lee, Sangjun"},{"last_name":"TenHuisen","first_name":"Sophia F. R.","full_name":"TenHuisen, Sophia F. R."},{"first_name":"Preston","full_name":"Zhou, Preston","last_name":"Zhou"},{"last_name":"Park","full_name":"Park, Sunwook","first_name":"Sunwook"},{"full_name":"Kim, Hoon","first_name":"Hoon","last_name":"Kim"},{"first_name":"Jin-Kwang","full_name":"Kim, Jin-Kwang","last_name":"Kim"},{"full_name":"Kim, Hyeong-Do","first_name":"Hyeong-Do","last_name":"Kim"},{"first_name":"Minseok","full_name":"Kim, Minseok","last_name":"Kim"},{"last_name":"Park","first_name":"Sang-Youn","full_name":"Park, Sang-Youn"},{"first_name":"Peter","full_name":"Abbamonte, Peter","last_name":"Abbamonte"},{"last_name":"Kim","full_name":"Kim, B. J.","first_name":"B. J."},{"last_name":"Gu","full_name":"Gu, G. D.","first_name":"G. D."},{"first_name":"Yao","full_name":"Wang, Yao","last_name":"Wang"},{"last_name":"Mitrano","first_name":"Matteo","full_name":"Mitrano, Matteo"}],"doi":"10.1103/physrevx.12.011013","publication_identifier":{"eissn":["2160-3308"]},"date_updated":"2023-08-22T07:28:38Z","volume":12,"extern":"1","type":"journal_article","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","oa":1,"status":"public","external_id":{"arxiv":["2109.13229"]},"citation":{"apa":"Baykusheva, D. R., Jang, H., Husain, A. A., Lee, S., TenHuisen, S. F. R., Zhou, P., … Mitrano, M. (2022). Ultrafast renormalization of the on-site Coulomb repulsion in a cuprate superconductor. <i>Physical Review X</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevx.12.011013\">https://doi.org/10.1103/physrevx.12.011013</a>","chicago":"Baykusheva, Denitsa Rangelova, Hoyoung Jang, Ali A. Husain, Sangjun Lee, Sophia F. R. TenHuisen, Preston Zhou, Sunwook Park, et al. “Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor.” <i>Physical Review X</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/physrevx.12.011013\">https://doi.org/10.1103/physrevx.12.011013</a>.","ista":"Baykusheva DR, Jang H, Husain AA, Lee S, TenHuisen SFR, Zhou P, Park S, Kim H, Kim J-K, Kim H-D, Kim M, Park S-Y, Abbamonte P, Kim BJ, Gu GD, Wang Y, Mitrano M. 2022. Ultrafast renormalization of the on-site Coulomb repulsion in a cuprate superconductor. Physical Review X. 12(1), 011013.","ieee":"D. R. Baykusheva <i>et al.</i>, “Ultrafast renormalization of the on-site Coulomb repulsion in a cuprate superconductor,” <i>Physical Review X</i>, vol. 12, no. 1. American Physical Society, 2022.","short":"D.R. Baykusheva, H. Jang, A.A. Husain, S. Lee, S.F.R. TenHuisen, P. Zhou, S. Park, H. Kim, J.-K. Kim, H.-D. Kim, M. Kim, S.-Y. Park, P. Abbamonte, B.J. Kim, G.D. Gu, Y. Wang, M. Mitrano, Physical Review X 12 (2022).","ama":"Baykusheva DR, Jang H, Husain AA, et al. Ultrafast renormalization of the on-site Coulomb repulsion in a cuprate superconductor. <i>Physical Review X</i>. 2022;12(1). doi:<a href=\"https://doi.org/10.1103/physrevx.12.011013\">10.1103/physrevx.12.011013</a>","mla":"Baykusheva, Denitsa Rangelova, et al. “Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor.” <i>Physical Review X</i>, vol. 12, no. 1, 011013, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/physrevx.12.011013\">10.1103/physrevx.12.011013</a>."},"month":"01","date_created":"2023-08-09T13:08:26Z","article_processing_charge":"No","issue":"1","oa_version":"Published Version","main_file_link":[{"open_access":"1","url":"https://doi.org/10.1103/PhysRevX.12.011013"}],"quality_controlled":"1","scopus_import":"1","title":"Ultrafast renormalization of the on-site Coulomb repulsion in a cuprate superconductor","intvolume":"        12","language":[{"iso":"eng"}],"date_published":"2022-01-20T00:00:00Z","publisher":"American Physical Society","article_type":"original","year":"2022","day":"20","keyword":["General Physics and Astronomy"]}