Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/52556
Type: Artigo de periódico
Title: LOCAL PROPERTIES IN THE ELECTRONIC-STRUCTURE OF DISORDERED BINARY-ALLOYS
Author: WEINKETZ, S
LAKS, B
CABRERA, GG
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.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.43.6474
Date Issue: 1991
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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