Phase separation in the combined Falicov-Kimball and static Holstein model

Details Phase separation in the combined Falicov-Kimball and static Holstein model Phase separation in the combined Falicov-Kimball and static Holstein model

2002-03-12

arxiv.org/abs/cond-mat/0203262v1

Phys. Rev. B 66, 033102-1--4 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures

Scientific paper

10.1103/PhysRevB.66.033102

The Falicov-Kimball model has been known to phase separate when the correlation strength is large and the temperature is low. We examine the stability of phase separation under the influence of an additional electron-phonon interaction that tries to force the electron density to be homogeneous. We find that the electron-phonon interaction eventually destroys the phase-separated state once it becomes larger than some critical value. The results of this work may have an influence on theories of collossal magentoresistance materials.

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