Anderson localisation on the Falicov-Kimball model with Coulomb disorder |
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| Authors: | Rubens DB?Carvalho Email author" target="_blank">Guilherme MA?AlmeidaEmail author Andre MC?Souza |
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| Institution: | 1.Instituto de Física, Universidade Federal do Rio Grande do
Sul,Porto Alegre,Brazil;2.Departamento de Física, Universidade Federal de
Sergipe,S?o Cristóv?o,Brazil;3.Institute for Quantum Science and Technology, University of
Calgary,Calgary,Canada |
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| Abstract: | The role of Coulomb disorder is analysed in the Anderson-Falicov-Kimball model. Phasediagrams are obtained by means of dynamical mean-field theory applied to the Bethelattice, in which metal-insulator transitions driven by Anderson and Coulomb disorder canbe identified. Metallic, Mott insulator, and Anderson insulator phases, as well as thecrossover between them are studied in this framework. We show that Coulomb disorder has arelevant role in the phase-transition behaviour as the system is led towards the insulatorregime. |
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