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Document Type: Artigo
Title: Crossing points in specific-heat curves of the asymmetric Hubbard model
Authors: Macêdo, Cláudio Andrade
Souza, André Maurício Conceição de
Issue Date: Apr-2002
Abstract: The phenomenon of the crossing points in specific-heat curves C(T,U) versus T of the one-dimensional half-filled-band asymmetric Hubbard model is investigated within the method of small-cluster exact-diagonalization calculations with extrapolation techniques to the infinite chain. A definite region where the crossing points occur is found to exist in a certain range of system parameters R (relative magnitude of the transfer integrals) and U (local interaction). We identify an association between crossing point occurrence and gradual localization of fermions.
Keywords: Modelo de Hubbard
Método de Cluster
ISSN: 1550-235X
Publisher / Institution : American Physical Society
Citation: MACEDO, C. A.; SOUZA, A. M. C. Crossing points in specific-heat curves of the asymmetric Hubbard model. Physical Review B, New York, v. 65, n.15, abr. 2002. Disponível em: <>. Acesso em: 18 mar. 2013.
License: ©2002 American Physical Society
Appears in Collections:DFI - Artigos de periódicos

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