Abstract
We present results for realistic modeling of the x-ray absorption near edge structure (XANES) of the overdoped high-Tc superconductor La₂₋ₓSrₓCuO₄ in the hole doping range x = 0.20 - 0.30. Our computations are based on a real-space Green's function approach in which strong-correlation effects are taken into account in terms of a doping-dependent self-energy. The predicted O K-edge XANES is found to be in good accord with the corresponding experimental results in this overdoped regime. We find that the low energy spectra are dominated by the contribution of O atoms in the cuprate planes, with little contribution from apical O atoms.
Keywords
x-ray absorption near edge structure, XANES, La₂₋ₓSrₓCuO₄
Subject Categories
Superconductors
Disciplines
Physics
Publisher
American Physical Society
Publication Date
3-11-2011
Rights Information
Copyright 2011 American Physical Society
Rights Holder
American Physical Society
Recommended Citation
Ahmed, Towfiq; Das, Tanmoy; Kas, J. J.; Barbiellini, B.; Vila, Fernando D.; Markiewicz, R. S.; Bansil, A.; and Rehr, J. J., "X-ray absorption near-edge spectra of overdoped La₂₋ₓSrₓCuO₄ high-T(c) superconductors" (2011). Physics Faculty Publications. Paper 436.
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Notes
Originally published in Physical Review B v.83 (2011): 115117. DOI: 10.1103/PhysRevB.83.115117