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arXiv · 0911.0934

Mott-Hubbard and Anderson metal-insulator transitions in correlated lattice fermions with binary disorder

Denis Semmler·Krzysztof Byczuk·Walter Hofstetter
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Abstract

Strongly correlated fermions in a crystal or in an optical lattice in the presence of binary alloy disorder are investigated. We employ the statistical dynamical mean-field theory, which incorporates both, local fluctuations due to disorder and local correlations due to interaction, to solve the Anderson-Hubbard model. Localization due to disorder is studied by means of the probability distribution function of the local density of states. We obtain a complete paramagnetic ground state phase diagram consisting of disordered correlated metal, Anderson-Mott insulator, and band insulator.

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Denis Semmler, Krzysztof Byczuk, Walter Hofstetter. 2010-09-14. Mott-Hubbard and Anderson metal-insulator transitions in correlated lattice fermions with binary disorder. https://doi.org/10.1103/physrevb.81.115111

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