Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/66525
Type: Artigo de periódico
Title: EXTENDED HUBBARD-MODEL - A CLUSTER EFFECTIVE-MEDIUM APPROACH
Author: LAGOS, RE
LARA, GA
CABRERA, GG
Abstract: We present a cluster effective-medium approach to the extended Hubbard model, for the zero-temperature, half-filled-band paramagnetic phase. We recover the known limits and comment on the broadening corrections to the model, and find a first-order metal-insulator transition, resulting from both the cluster nature of the method and the correlated hopping term.
Country: EUA
Editor: American Physical Soc
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.47.12445
Date Issue: 1993
Appears in Collections:Unicamp - Artigos e Outros Documentos

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