Dynamic Potentials for Unstable Narrow Band Systems. Application to Intermediate Valence and Heavy Fermion Compounds

F. López‐Aguilar, S. Balle, J. Costa‐Quintana

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Abstract

The one‐body propagator for interacting systems with strongly correlated electrons is determined. The self‐energy functional is constructed from a GW approximation and a self‐consistent procedure is given for determining the electronic structure of the f systems (4f and 5f). The method is applied to the intermediate valence phase of SmS and to UAl2 which is a heavy fermion compound. The resulting electronic structure is compared with available experimental results. The obtained density of states presents reasonable agreement with these results. Copyright © 1988 WILEY‐VCH Verlag GmbH & Co. KGaA
Original languageEnglish
Pages (from-to)585-593
Journalphysica status solidi (b)
Volume149
Issue number2
DOIs
Publication statusPublished - 1 Jan 1988

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