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Anderson localisation on the Falicov-Kimball model with Coulomb disorder

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Abstract

The role of Coulomb disorder is analysed in the Anderson-Falicov-Kimball model. Phase diagrams are obtained by means of dynamical mean-field theory applied to the Bethe lattice, in which metal-insulator transitions driven by Anderson and Coulomb disorder can be identified. Metallic, Mott insulator, and Anderson insulator phases, as well as the crossover between them are studied in this framework. We show that Coulomb disorder has a relevant role in the phase-transition behaviour as the system is led towards the insulator regime.

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Authors and Affiliations

  1. Instituto de Física, Universidade Federal do Rio Grande do Sul, 91501-970, Porto Alegre, Brazil

    Rubens D.B. Carvalho

  2. Departamento de Física, Universidade Federal de Sergipe, 49100-000, São Cristóvão, Brazil

    Guilherme M.A. Almeida & Andre M.C. Souza

  3. Institute for Quantum Science and Technology, University of Calgary, Calgary, Alberta, T2N 1N4, Canada

    Guilherme M.A. Almeida

Authors
  1. Rubens D.B. Carvalho
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  2. Guilherme M.A. Almeida
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  3. Andre M.C. Souza
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Correspondence to Guilherme M.A. Almeida.

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Carvalho, R., Almeida, G. & Souza, A. Anderson localisation on the Falicov-Kimball model with Coulomb disorder. Eur. Phys. J. B 87, 160 (2014). https://doi.org/10.1140/epjb/e2014-50221-3

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  • DOI: https://doi.org/10.1140/epjb/e2014-50221-3

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