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Type: Artigo de periódico
Title: Local Properties In The Electronic Structure Of Disordered Binary Alloys
Author: Weinketz S.
Laks B.
Cabrera G.G.
Abstract: The electronic density of states (DOS) of disordered binary alloys is studied for a tight-binding model Hamiltonian, using a local approach based on a continued-fraction representation for the Green function. In addition to a single-site probability, a short-range-order parameter is introduced to monitor nearest-neighbor correlations. Our method employs a termination that allows for local fluctuations of both species of atoms, according to the configuration produced. The final DOS is obtained as a weighted average over all the local spectra generated in the way described above. We probe our approach in the one-dimensional case, and excellent agreement with Monte Carlo simulations is found. © 1991 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.43.6474
Date Issue: 1991
Appears in Collections:Unicamp - Artigos e Outros Documentos

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