Does the Falicov-Kimball model allow for a ferroelectric ground state with a spontaneous polarization?

P. Farkasovsky

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arXiv · cond-mat/9811375

Does the Falicov-Kimball model allow for a ferroelectric ground state with a spontaneous polarization?

P. Farkasovsky

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Abstract

The extrapolation of small-cluster exact-diagonalization calculations is used to examine the possibility of electronic ferroelectricity in the one dimensional spinless and spin-one-half Falicov-Kimball model (FKM). It is found that neither spinless nor spin-one-half version of the FKM does not allow for a ferroelectric ground state with a spontaneous polarization, i.e. there is no nonvanishing $ $-expectation value for vanishing hybridization $V$.

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P. Farkasovsky. 1998-11-26. Does the Falicov-Kimball model allow for a ferroelectric ground state with a spontaneous polarization?. https://arxiv.org/abs/cond-mat/9811375

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