Inelastic x-ray scattering as a probe of electronic correlations

Abstract

We construct an exact dynamical mean field theory for nonresonant inelastic light scattering in the infinite-dimensional Falicov-Kimball model, which can be tuned through a quantum critical metal-insulator transition. Due to the projection of the polarization orientations onto different regions of the Brillouin zone and due to the transfer of energy and momentum from the light to the strongly correlated charge excitations, the nature of the dynamics can be naturally interpreted as strongly temperature-dependent low-energy particle-hole excitations and weakly temperature-dependent high-energy charge transfer excitations which depend delicately on the electronic correlations. These results can be used to give important information concerning the evolution of charge dynamics in different regions of the Brillouin zone.

arXiv comment11 pages, 10 figures

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Cited by in corpus (10)

• Resonant Inelastic X-ray Scattering Studies of Elementary Excitations
• Inelastic Light Scattering From Correlated Electrons
• Exact solution of the Falicov-Kimball model with dynamical mean-field theory
• Ultrashort Lifetime Expansion for Indirect Resonant Inelastic X-ray Scattering
• Electronic Raman scattering in correlated materials: exact treatment of nonresonant, mixed, and resonant scattering with dynamical mean field theory
• Resonant Enhancement of Inelastic Light Scattering in Strongly Correlated Materials
• Resonant inelastic X-ray scattering in a Mott insulator
• Collective excitations in unconventional charge-density wave systems
• Nonresonant Raman and inelastic X-ray scattering in the charge-density-wave phase of the spinless Falicov-Kimball model
• Signatures of multiple charge excitations in RIXS spectra of metals