Correlation Induced Insulator to Metal Transitions
arXiv:cond-mat/9312021 · doi:10.1103/PhysRevLett.72.2761
Abstract
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.
12 pages, REVTEX
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