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Type: Artigo de periódico
Title: New Approach To The Theory Of Intermediate Valence. I. General Formulation
Author: Foglio M.E.
Falicov L.M.
Abstract: We present a new approach to the theory of intermediate valence, applicable to a specific kind of such solids. It consist of: (i) diagonalization of all intra-atomic terms in the Hamiltonian, including hybridization; (ii) elimination by means of a projection of all states beyond a low-energy manifold; (iii) conversion of the remaining states into equivalent fermion states; (iv) expression of the intra- and interatomic states in terms of the new fermion operators; and (v) treatment of this new Hamiltonian in a mean-field approximation. This approach, although valid in restricted cases, avoids all the problems of the alternative treatments. © 1979 The American Physical Society.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.20.4554
Date Issue: 1979
Appears in Collections:Unicamp - Artigos e Outros Documentos

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