A modified form of the polar model of crystals

Details A modified form of the polar model of crystals A modified form of the polar model of crystals

1998-12-22

arxiv.org/abs/cond-mat/9812364v1

Condensed Matter Physics, vol. 1, No. 1 (13), p. 125-144

Physics

Condensed Matter

Strongly Correlated Electrons

17 pages, 4 eps figures, Latex 2.09

Scientific paper

A model for description of materials with narrow energy bands is proposed. It
is shown that in narrow-band materials electron-hole symmetry is absent in
contrast to the Hubbard model. In this paper metal-insulator transition is
studied. The obtained results are compared with experimental data for
narrow-band materials. Some specific narrow-band effects are discussed.

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