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dc.contributor.authorMacêdo, Cláudio Andrade-
dc.contributor.authorSouza, André Maurício Conceição de-
dc.identifier.citationMACEDO, 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.pt_BR
dc.description.abstractThe 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.pt_BR
dc.publisherAmerican Physical Societypt_BR
dc.subjectModelo de Hubbardpt_BR
dc.subjectMétodo de Clusterpt_BR
dc.titleCrossing points in specific-heat curves of the asymmetric Hubbard modelpt_BR
dc.identifier.license©2002 American Physical Societypt_BR
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