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Precise dd excitations and commensurate intersite Coulomb interactions in the dissimilar cuprates YBa2Cu3 O7-y and La2-xSrxCu O4

Huang, Shih Wen LU ; Wray, L. Andrew ; Shao, Yu Cheng ; Wu, Cheng Yau ; Wang, Shun Hung ; Lee, Jenn Min LU ; Chen, Y. J. LU ; Schoenlein, R. W. ; Mou, C. Y. and Chuang, Yi De , et al. (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.

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organization
publishing date
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}},
}