Understanding the relationship between resonant and non-resonant x-ray probes of correlated matter

Details Understanding the relationship between resonant and non-resonant x-ray probes of correlated matter Understanding the relationship between resonant and non-resonant x-ray probes of correlated matter

2011-09-15

arxiv.org/abs/1109.3446v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 3 figures

Scientific paper

A great deal of effort has been devoted to understanding the possible connections between resonant and non-resonant x-ray probes of correlated materials. In this letter we present a comparison between momentum-dependent indirect resonant inelastic x-ray scattering (RIXS) and the dynamical structure factor S(q,\omega) for the single-band Hubbard model. Our results highlight the fact that RIXS exhibits charge as well as spin or multi-magnon energy-loss excitations with a strong incident energy dependence. Although indirect RIXS and S(q,\omega) share a number of the same possible final state excitations, the cross-sections as functions of energy-loss are quite different; and the two spectra can not always be simply connected by resonant prefactors or by other commonly proposed approximation schemes.

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