https://doi.org/10.1140/epjb/e2014-50221-3
Regular Article
Anderson localisation on the Falicov-Kimball model with Coulomb disorder
1
Instituto de Física, Universidade Federal do Rio Grande do
Sul, 91501-970
Porto Alegre,
Brazil
2
Departamento de Física, Universidade Federal de
Sergipe, 49100-000
São Cristóvão,
Brazil
3
Institute for Quantum Science and Technology, University of
Calgary, Calgary,
Alberta, T2N 1N4, Canada
a e-mail: gmaalmeida@ufs.br
Received:
1
April
2014
Published online:
23
July
2014
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.
Key words: Solid State and Materials
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2014
