We present results for realistic modeling of the x-ray absorption near edge structure (XANES) of the overdoped high-$T_c$ superconductor ${\mathrm{La}}_{2-x}{\mathrm{Sr}}_x{\mathrm{CuO}}_4$ 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.

• Received 29 October 2010

DOI:https://doi.org/10.1103/PhysRevB.83.115117