Resonant inelastic x-ray scattering in one-dimensional copper oxides

Details Resonant inelastic x-ray scattering in one-dimensional copper oxides Resonant inelastic x-ray scattering in one-dimensional copper oxides

1999-09-23

arxiv.org/abs/cond-mat/9909346v2

Phys. Rev. B 61, 7180 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages with 4 figures, minor changes, to appear in Phys.Rev.B

Scientific paper

10.1103/PhysRevB.61.7180

The Cu K-edge resonant inelastic x-ray scattering (RIXS) spectrum in one-dimensional insulating cuprates is theoretically examined by using the exact diagonalization technique for the extended one-dimensional Hubbard model with nearest neighbor Coulomb interaction. We find the following characteristic features that can be detectable by RIXS experiments: (i) The spectrum with large momentum transfer indicates the formation of excitons, i.e., bound states of holon and doublon. (ii) The spectrum with small momentum transfer depends on the incident photon energy. We propose that the RIXS provides a unique opportunity to study the upper Hubbard band in one-dimensional cuprates.

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