Electronic phase transitions in one-dimensional spinless fermion model with competing interactions

Details Electronic phase transitions in one-dimensional spinless fermion model with competing interactions Electronic phase transitions in one-dimensional spinless fermion model with competing interactions

1997-07-28

arxiv.org/abs/cond-mat/9707279v1

Physics

Condensed Matter

Strongly Correlated Electrons

6 pages, 12 Postscript figures, RevTeX

Scientific paper

10.1103/PhysRevB.56.12939

An accurate numerical consideration is carried out of the ground state for the simplified model which is traditionally used for the description of Verwey transition and related phenomena. In the framework of 1D spinless fermion model, the effects of next-nearest neighbour (NNN) interaction on the metal-insulator transition are investigated for electron concentrations 1/2 and 2/3. It is shown that for large enough NNN transfer integrals the electronic topological transition of metal-metal type is also possible. The corresponding phase diagrams are presented.

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