X-ray absorption near-edge spectra of overdoped La2−xSrxCuO4 high-Tc superconductors
Towfiq Ahmed, Tanmoy Das, J. J. Kas, Hsin Lin, B. Barbiellini, Fernando D. Vila, R. S. Markiewicz, A. Bansil, J. J. Rehr
DOI 10.1103/PhysRevB.83.115117 · Physical Review B
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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.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La2-xSrxCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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