Ground states of an extended Falicov-Kimball model

P. M.R. Brydon; M. Gulácsi; A. Bussmann-Holder

doi:10.1140/epjb/e2006-00431-3

Ground states of an extended Falicov-Kimball model

P. M.R. Brydon^*, M. Gulácsi, A. Bussmann-Holder

^*Corresponding author for this work

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

Abstract

We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlations. We derive an effective Ising model for the atomic configuration in order to show how the Hubbard term affects the stability of the phase separated states. Furthermore, we investigate the competition between the Mott insulator state of the itinerant electrons and the checkerboard phase of the spinless Falicov-Kimball model.

Original language	English
Pages (from-to)	73-81
Number of pages	9
Journal	European Physical Journal B
Volume	54
Issue number	1
DOIs	https://doi.org/10.1140/epjb/e2006-00431-3
Publication status	Published - Nov 2006

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abstract = "We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlations. We derive an effective Ising model for the atomic configuration in order to show how the Hubbard term affects the stability of the phase separated states. Furthermore, we investigate the competition between the Mott insulator state of the itinerant electrons and the checkerboard phase of the spinless Falicov-Kimball model.",

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

year = "2006",

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AU - Bussmann-Holder, A.

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N2 - We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlations. We derive an effective Ising model for the atomic configuration in order to show how the Hubbard term affects the stability of the phase separated states. Furthermore, we investigate the competition between the Mott insulator state of the itinerant electrons and the checkerboard phase of the spinless Falicov-Kimball model.

AB - We present a non-perturbative study of an extended Falicov-Kimball model in one dimension. Working within the binary alloy interpretation, we include the spin of the itinerant electrons and a Hubbard interaction to model the inter-electron correlations. We derive an effective Ising model for the atomic configuration in order to show how the Hubbard term affects the stability of the phase separated states. Furthermore, we investigate the competition between the Mott insulator state of the itinerant electrons and the checkerboard phase of the spinless Falicov-Kimball model.

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DO - 10.1140/epjb/e2006-00431-3

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VL - 54

SP - 73

EP - 81

JO - European Physical Journal B

JF - European Physical Journal B

IS - 1

ER -

Ground states of an extended Falicov-Kimball model

Abstract

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