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Falicov-Kimball model and the problem of electronic ferroelectricity

Pavol Farkasovsky
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Abstract

The density matrix renormalization group method is used to examine possibilities of electronic ferroelectricity in the spinless Falicov-Kimball model. The model is studied for a wide range of parameters including weak and strong interactions as well as the symmetric and unsymmetric case. In all examined cases the $ $-expectation value vanishes for vanishing hybridization $V$, indicating that the spinless Falicov-Kimball model does not allow for a ferroelectric ground state with a spontaneous polarization.

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Pavol Farkasovsky. 2001-09-26. Falicov-Kimball model and the problem of electronic ferroelectricity. https://doi.org/10.1103/physrevb.65.081102

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