Electronic polarons in an extended Falicov-Kimball model
Strongly Correlated Electrons
2009-01-26 v2
Abstract
We examine the one-dimensional spinless Falicov-Kimball model extended by a hybridization potential between the localized and itinerant electron states. Below half-filling we find a crossover from a mixed-valence metal to an integer-valence phase separated state with increasing on-site Coulomb repulsion. This crossover regime is characterized by local competition between the strong- and weak-coupling behaviour, manifested by the formation of an electronic polaron liquid. We identify this intermediate-coupling regime as a charge-analogy of the Griffiths phase; a phase diagram is presented and discussed in detail.
Keywords
Cite
@article{arxiv.cond-mat/0502030,
title = {Electronic polarons in an extended Falicov-Kimball model},
author = {P. M. R. Brydon and M. Gulacsi and A. R. Bishop},
journal= {arXiv preprint arXiv:cond-mat/0502030},
year = {2009}
}
Comments
RevTex, 10 pages, 1 figure; revised discussion