Green-Function Method for a Mixed-Valence Hamiltonian
dc.contributor.author | Simões, Acirete Souza da Rosa | pt_BR |
dc.contributor.author | Iglesias, Jose Roberto | pt_BR |
dc.contributor.author | Anda, Enrique V. | pt_BR |
dc.date.accessioned | 2014-10-01T02:10:17Z | pt_BR |
dc.date.issued | 1984 | pt_BR |
dc.identifier.issn | 0163-1829 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/103993 | pt_BR |
dc.description.abstract | A 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.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Physical review. B, Condensed matter. New York. Vol. 29, no. 6 (Mar. 1984), p. 3085-3089 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Física da matéria condensada | pt_BR |
dc.subject | Metodos de funcoes de green | pt_BR |
dc.subject | Compostos de valencia mista | pt_BR |
dc.subject | Modelo de hubbard | pt_BR |
dc.subject | Transição metal isolante | pt_BR |
dc.title | Green-Function Method for a Mixed-Valence Hamiltonian | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000115612 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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