Electronic polarons in an extended Falicov-Kimball model

P. M.R. Brydon; M. Gulácsi; A. R. Bishop

doi:10.1209/epl/i2005-10509-0

Electronic polarons in an extended Falicov-Kimball model

P. M.R. Brydon^*, M. Gulácsi, A. R. Bishop

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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. A phase diagram is presented and discussed in detail.

Original language	English
Pages (from-to)	131-137
Number of pages	7
Journal	Europhysics Letters
Volume	74
Issue number	1
DOIs	https://doi.org/10.1209/epl/i2005-10509-0
Publication status	Published - 1 Apr 2006

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title = "Electronic polarons in an extended Falicov-Kimball model",

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. A phase diagram is presented and discussed in detail.",

author = "Brydon, {P. M.R.} and M. Gul{\'a}csi and Bishop, {A. R.}",

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AU - Bishop, A. R.

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Y1 - 2006/4/1

N2 - 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. A phase diagram is presented and discussed in detail.

AB - 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. A phase diagram is presented and discussed in detail.

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DO - 10.1209/epl/i2005-10509-0

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VL - 74

SP - 131

EP - 137

JO - Europhysics Letters

JF - Europhysics Letters

IS - 1

ER -

Electronic polarons in an extended Falicov-Kimball model

Abstract

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