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dc.contributor.authorSimões, Acirete Souza da Rosapt_BR
dc.contributor.authorIglesias, Jose Robertopt_BR
dc.contributor.authorAnda, Enrique V.pt_BR
dc.date.accessioned2014-10-01T02:10:17Zpt_BR
dc.date.issued1984pt_BR
dc.identifier.issn0163-1829pt_BR
dc.identifier.urihttp://hdl.handle.net/10183/103993pt_BR
dc.description.abstractA Green-function diagrammatic method is utilized to calculate the occupation number of a narrow (j) band in a mixed-valence system. The method is a generalization of the Hubbard-1 approximation for a two-band Hamiltonian. The results at T=O K indicate the existence of an intermediate-valence state for finite hybridization between the bands, and abrupt transitions for values of G comparable to the half bandwidth of the conduction band. A metal-insulator transition is also obtained.en
dc.format.mimetypeapplication/pdfpt_BR
dc.language.isoengpt_BR
dc.relation.ispartofPhysical review. B, Condensed matter. New York. Vol. 29, no. 6 (Mar. 1984), p. 3085-3089pt_BR
dc.rightsOpen Accessen
dc.subjectFísica da matéria condensadapt_BR
dc.subjectMetodos de funcoes de greenpt_BR
dc.subjectCompostos de valencia mistapt_BR
dc.subjectModelo de hubbardpt_BR
dc.subjectTransição metal isolantept_BR
dc.titleGreen-Function Method for a Mixed-Valence Hamiltonianpt_BR
dc.typeArtigo de periódicopt_BR
dc.identifier.nrb000115612pt_BR
dc.type.originEstrangeiropt_BR


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