Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor
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...
| Main Authors: | , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-01-01
|
| Series: | Physical Review X |
| Online Access: | http://doi.org/10.1103/PhysRevX.12.011013 |
| _version_ | 1798015933323673600 |
|---|---|
| author | Denitsa R. Baykusheva Hoyoung Jang Ali A. Husain Sangjun Lee Sophia F. R. TenHuisen Preston Zhou Sunwook Park Hoon Kim Jin-Kwang Kim Hyeong-Do Kim Minseok Kim Sang-Youn Park Peter Abbamonte B. J. Kim G. D. Gu Yao Wang Matteo Mitrano |
| author_facet | Denitsa R. Baykusheva Hoyoung Jang Ali A. Husain Sangjun Lee Sophia F. R. TenHuisen Preston Zhou Sunwook Park Hoon Kim Jin-Kwang Kim Hyeong-Do Kim Minseok Kim Sang-Youn Park Peter Abbamonte B. J. Kim G. D. Gu Yao Wang Matteo Mitrano |
| author_sort | Denitsa R. Baykusheva |
| collection | DOAJ |
| description | 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 U). 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, La_{1.905}Ba_{0.095}CuO_{4}. 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. |
| first_indexed | 2024-04-11T15:42:39Z |
| format | Article |
| id | doaj.art-762a17cc23774dc1970b0f351a3fd633 |
| institution | Directory Open Access Journal |
| issn | 2160-3308 |
| language | English |
| last_indexed | 2024-04-11T15:42:39Z |
| publishDate | 2022-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review X |
| spelling | doaj.art-762a17cc23774dc1970b0f351a3fd6332022-12-22T04:15:44ZengAmerican Physical SocietyPhysical Review X2160-33082022-01-0112101101310.1103/PhysRevX.12.011013Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate SuperconductorDenitsa R. BaykushevaHoyoung JangAli A. HusainSangjun LeeSophia F. R. TenHuisenPreston ZhouSunwook ParkHoon KimJin-Kwang KimHyeong-Do KimMinseok KimSang-Youn ParkPeter AbbamonteB. J. KimG. D. GuYao WangMatteo MitranoUltrafast 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 U). 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, La_{1.905}Ba_{0.095}CuO_{4}. 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.http://doi.org/10.1103/PhysRevX.12.011013 |
| spellingShingle | Denitsa R. Baykusheva Hoyoung Jang Ali A. Husain Sangjun Lee Sophia F. R. TenHuisen Preston Zhou Sunwook Park Hoon Kim Jin-Kwang Kim Hyeong-Do Kim Minseok Kim Sang-Youn Park Peter Abbamonte B. J. Kim G. D. Gu Yao Wang Matteo Mitrano Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor Physical Review X |
| title | Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor |
| title_full | Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor |
| title_fullStr | Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor |
| title_full_unstemmed | Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor |
| title_short | Ultrafast Renormalization of the On-Site Coulomb Repulsion in a Cuprate Superconductor |
| title_sort | ultrafast renormalization of the on site coulomb repulsion in a cuprate superconductor |
| url | http://doi.org/10.1103/PhysRevX.12.011013 |
| work_keys_str_mv | AT denitsarbaykusheva ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT hoyoungjang ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT aliahusain ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT sangjunlee ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT sophiafrtenhuisen ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT prestonzhou ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT sunwookpark ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT hoonkim ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT jinkwangkim ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT hyeongdokim ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT minseokkim ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT sangyounpark ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT peterabbamonte ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT bjkim ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT gdgu ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT yaowang ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor AT matteomitrano ultrafastrenormalizationoftheonsitecoulombrepulsioninacupratesuperconductor |