Correlation Induced Insulator to Metal Transitions

Details Correlation Induced Insulator to Metal Transitions Correlation Induced Insulator to Metal Transitions

1993-12-05

arxiv.org/abs/cond-mat/9312021v1

Physics

Condensed Matter

12 pages, REVTEX

Scientific paper

10.1103/PhysRevLett.72.2761

We study a spinless two-band model at half-filling in the limit of infinite dimensions. The ground state of this model in the non-interacting limit is a band-insulator. We identify transitions to a metal and to a charge-Mott insulator, using a combination of analytical, Quantum Monte Carlo, and zero temperature recursion methods. The metallic phase is a non-Fermi liquid state with algebraic local correlation functions with universal exponents over a range of parameters.

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