Optical sum rules that relate to the potential energy of strongly correlated systems

J. K. Freericks, T. P. Devereaux, M. Moraghebi, S. L. Cooper

Research output: Contribution to journalArticlepeer-review

Abstract

A class of sum rules for inelastic light scattering is developed. We show that the first moment of the nonresonant response provides information about the potential energy in strongly correlated systems. The polarization dependence of the sum rules provides information about the electronic excitations in different regions of the Brillouin zone. We determine the sum rule for the Falicov-Kimball model, which possesses a metal-insulator transition, and compare our results to the light scattering experiments in SmB6.

Original languageEnglish (US)
Article number216401
JournalPhysical review letters
Volume94
Issue number21
DOIs
StatePublished - Jun 3 2005

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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