X-ray absorption near-edge spectra of overdoped La₂₋ₓSrₓCuO₄ high-T(c) superconductors
Originally published in Physical Review B v.83 (2011): 115117. DOI: 10.1103/PhysRevB.83.115117
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.
Towfiq Ahmed, Tanmoy Das, J. J. Kas, B. Barbiellini, Fernando D. Vila, R. S. Markiewicz, A. Bansil, and J. J. Rehr. "X-ray absorption near-edge spectra of overdoped La₂₋ₓSrₓCuO₄ high-T(c) superconductors" Physics Faculty Publications (2011).
Available at: http://works.bepress.com/rmarkiewicz/36