Theoretical Study on Resonant Inelastic X-Ray Scattering in Quasi-One-Dimensional Cuprates

Abstract

We study theoretically the resonant inelastic x-ray scattering in quasi-one-dimensional insulating copper oxides, where the incident photon energy is tuned to the Cu1s-4p absorption energy. Our attention is focused particularly on the strong momentum-transfer dependence of the spectral shape observed in recent experiments. We describe the antiferromagnetic ground state within the Hartree-Fock theory, and consider charge excitations from the ground state within the random phase approximation. By taking account of the electron correlation effects perturbatively, we obtain detailed momentum-transfer dependence of the spectra in a semiquantitative agreement with the experiments.

arXiv comment4 pages, 5 figures, submitted to J. Phys. Soc. Jpn

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• Analysis of Resonant Inelastic X-Ray Scattering in Stripe-Ordered Nickelate
• Signatures of multiple charge excitations in RIXS spectra of metals