Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-02-05
J. Phys. Soc. Jpn. 73, 1677-1680 (2004)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 5 figures, submitted to J. Phys. Soc. Jpn
Scientific paper
10.1143/JPSJ.73.1677
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.
Igarashi Jun-ichi
Nomura Takuji
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