Precise dd excitations and commensurate intersite Coulomb interactions in the dissimilar cuprates YBa2Cu3 O7-y and La2-xSrxCu O4
(2023) In Physical Review B 107(13).- Abstract
Using high-resolution extreme ultraviolet resonant inelastic x-ray scattering (EUVRIXS) spectroscopy at the Cu M-edge, we observed doping dependent spectral shifts of interorbital (dd) excitations of YBa2Cu3O7-y and La2-xSrxCuO4. With increasing the hole doping level from undoped to optimally doped superconducting compositions, the leading edge of dd excitations is found to shift towards lower energy loss in a roughly linear trend that is irrespective of the cuprate species. The magnitude of the energy shift can be explained by including a 0.15 eV Coulomb attraction between Cu3d(x2-y2) electrons and the doped holes on the surrounding oxygens in the atomic multiplet calculations. The consistent energy shift between distinct cuprate... (More)
Using high-resolution extreme ultraviolet resonant inelastic x-ray scattering (EUVRIXS) spectroscopy at the Cu M-edge, we observed doping dependent spectral shifts of interorbital (dd) excitations of YBa2Cu3O7-y and La2-xSrxCuO4. With increasing the hole doping level from undoped to optimally doped superconducting compositions, the leading edge of dd excitations is found to shift towards lower energy loss in a roughly linear trend that is irrespective of the cuprate species. The magnitude of the energy shift can be explained by including a 0.15 eV Coulomb attraction between Cu3d(x2-y2) electrons and the doped holes on the surrounding oxygens in the atomic multiplet calculations. The consistent energy shift between distinct cuprate families suggests that this intersite Coulomb interaction energy scale is relatively material independent, and provides an important reference point for understanding charge density wave phenomena in the cuprate phase diagram.
(Less)
- author
- organization
- publishing date
- 2023-04-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review B
- volume
- 107
- issue
- 13
- article number
- 134513
- publisher
- American Physical Society
- external identifiers
-
- scopus:85158901293
- ISSN
- 2469-9950
- DOI
- 10.1103/PhysRevB.107.134513
- language
- English
- LU publication?
- yes
- id
- 0c262f20-2dae-4e29-b80d-79277701a2e0
- date added to LUP
- 2023-08-11 13:54:45
- date last changed
- 2023-08-11 13:54:45
@article{0c262f20-2dae-4e29-b80d-79277701a2e0, abstract = {{<p>Using high-resolution extreme ultraviolet resonant inelastic x-ray scattering (EUVRIXS) spectroscopy at the Cu M-edge, we observed doping dependent spectral shifts of interorbital (dd) excitations of YBa2Cu3O7-y and La2-xSrxCuO4. With increasing the hole doping level from undoped to optimally doped superconducting compositions, the leading edge of dd excitations is found to shift towards lower energy loss in a roughly linear trend that is irrespective of the cuprate species. The magnitude of the energy shift can be explained by including a 0.15 eV Coulomb attraction between Cu3d(x2-y2) electrons and the doped holes on the surrounding oxygens in the atomic multiplet calculations. The consistent energy shift between distinct cuprate families suggests that this intersite Coulomb interaction energy scale is relatively material independent, and provides an important reference point for understanding charge density wave phenomena in the cuprate phase diagram.</p>}}, author = {{Huang, Shih Wen and Wray, L. Andrew and Shao, Yu Cheng and Wu, Cheng Yau and Wang, Shun Hung and Lee, Jenn Min and Chen, Y. J. and Schoenlein, R. W. and Mou, C. Y. and Chuang, Yi De and Lin, J. Y.}}, issn = {{2469-9950}}, language = {{eng}}, month = {{04}}, number = {{13}}, publisher = {{American Physical Society}}, series = {{Physical Review B}}, title = {{Precise dd excitations and commensurate intersite Coulomb interactions in the dissimilar cuprates YBa2Cu3 O7-y and La2-xSrxCu O4}}, url = {{http://dx.doi.org/10.1103/PhysRevB.107.134513}}, doi = {{10.1103/PhysRevB.107.134513}}, volume = {{107}}, year = {{2023}}, }