Momentum Dependence of Resonant Inelastic X-Ray Scattering Spectrum in Insulating Cuprates

Details Momentum Dependence of Resonant Inelastic X-Ray Scattering Spectrum in Insulating Cuprates Momentum Dependence of Resonant Inelastic X-Ray Scattering Spectrum in Insulating Cuprates

1999-05-26

arxiv.org/abs/cond-mat/9905372v2

Phys. Rev. Lett. 83, 3705 (1999)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages with 4 figures, to be published in PRL

Scientific paper

10.1103/PhysRevLett.83.3705

The resonant inelastic x-ray scattering spectrum in insulating cuprates is examined by using the exact diagonalization technique on small clusters in the two-dimensional Hubbard model with second and third neighbor hopping terms. When the incident photon energy is tuned near the Cu K absorption edges, we find that the features of the unoccupied upper Hubbard band can be extracted from the spectrum through an anisotropic momentum dependence. They provide an opportunity for the understanding of the different behavior of hole- and electron-doped superconductors.

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