Segregation and charge-density-wave order in the spinless Falicov-Kimball model

Details Segregation and charge-density-wave order in the spinless Falicov-Kimball model Segregation and charge-density-wave order in the spinless Falicov-Kimball model

1999-12-10

arxiv.org/abs/cond-mat/9912178v1

Phys. Rev. B 61 13438--13444 (2000)

Physics

Condensed Matter

Strongly Correlated Electrons

10 pages, 10 figures

Scientific paper

10.1103/PhysRevB.61.13438

The spinless Falicov-Kimball model is solved exactly in the limit of infinite-dimensions on both the hypercubic and Bethe lattices. The competition between segregation, which is present for large U, and charge-density-wave order, which is prevalent at moderate U, is examined in detail. We find a rich phase diagram which displays both of these phases. The model also shows nonanalytic behavior in the charge-density-wave transition temperature when U is large enough to generate a correlation-induced gap in the single-particle density of states.

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