Integer filling metal insulator transitions in the degenerate Hubbard model

Details Integer filling metal insulator transitions in the degenerate Hubbard model Integer filling metal insulator transitions in the degenerate Hubbard model

1996-11-06

arxiv.org/abs/cond-mat/9611045v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages + 4 figures (in 5 ps-files), revtex

Scientific paper

10.1103/PhysRevB.55.R4855

We obtain exact numerical solutions of the degenerate Hubbard model in the limit of large dimensions (or large lattice connectivity). Successive Mott-Hubbard metal insulator transitions at integer fillings occur at intermediate values of the interaction and low enough temperature in the paramagnetic phase. The results are relevant for transition metal oxides with partially filled narrow degenerate bands.

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