Optical sum rules that relate to the potential energy of strongly correlated systems.
Phys Rev Lett
; 94(21): 216401, 2005 Jun 03.
Article
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| MEDLINE
| ID: mdl-16090335
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 SmB(6).
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Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos