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Type: Artigo de periódico
Title: Extended Hubbard Model: A Cluster Effective-medium Approach
Author: Lagos R.E.
Lara G.A.
Cabrera G.G.
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. © 1993 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.47.12445
Date Issue: 1993
Appears in Collections:Unicamp - Artigos e Outros Documentos

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