Anderson localization on Falicov-Kimball model with next-nearest-neighbor hopping and long-range correlated disorder

• Autor(a) principal: Souza, André Maurício Conceição de
• Data de Publicação: 2008
• Outros Autores: Maionchi, Daniela de Oliveira, Herrmann, Hans Jürgen, Costa Filho, Raimundo Nogueira da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFS
• DOI: 10.1103/PhysRevB.77.245126
• Texto Completo: https://ri.ufs.br/handle/riufs/467
• topic: Transição de Anderson; Localização de Anderson; Modelo de Falicov-Kimball

The phase diagram of correlated disordered electron systems is calculated within dynamical mean-field theory for the Anderson-Falicov-Kimball model with nearest-neighbor and next-nearest-neighbor hoppings. The half-filled band is analyzed in terms of the chemical potential of the system using the geometric and arithmetic averages. We also introduce the on-site energies exhibiting a long-range correlated disorder, which generates a system with similar characteristics as the one created by a random independent variable distribution. A decrease in the correlated disorder reduces the extended phase.