Competition between phase separation and "classical" intermediate valence in an exactly solved model

Abstract

The exact solution of the spin-1/2 Falicov-Kimball model on an infinite-coordination Bethe lattice is analyzed in the regime of ``classical'' intermediate valence. We find (i) either phase separation or a direct metal-insulator transition preclude intermediate valence over a large portion of the phase diagram and (ii) within the intermediate valence phase, only continuous transitions are found as functions of the localized f-electron energy or temperature.

5 pages, 4 eps figures, ReVTeX

References in corpus (1)

• Anomalous magnetic response of the spin-one-half Falicov-Kimball model

Cited by in corpus (4)

• Exact solution of the Falicov-Kimball model with dynamical mean-field theory
• Exact solution of the multi-component Falicov-Kimball model in infinite dimensions
• Equivalence of the Falicov-Kimball and Brandt-Mielsch forms for the free energy of the infinite-dimensional Falicov-Kimball model
• Charge Kondo Effect and Superconductivity in the Falikov-Kimball model with the Pair Hopping