Strongly correlated electron materials. II. Band structure and renormalized density of states in heavy-fermion systems and high-Tc superconductors

J. Costa-Quintana, F. López-Aguilar, L. Puig-Puig

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13 Citations (Scopus)

Abstract

We give a method for obtaining renormalized electronic structures arising from quasiparticle band structures of actual Hubbard systems, using some of the self-energies deduced in paper I of this series. The quasiparticle band structures are determined from an appropriate modification of the augmented plane-wave method, and the renormalized density of states is found from the spectral functions. We calculate the quasiparticle structure of a Ce system, which presents the three characteristic types of resonances of the pseudogap regime mentioned in paper I of this series and also the electronic structure of Y-Ba-Cu-O, which seems to display the characteristics of a standard Fermi liquid or a marginal Fermi liquid. © 1993 The American Physical Society.
Original languageEnglish
Pages (from-to)1139-1147
JournalPhysical Review B
Volume48
Issue number2
DOIs
Publication statusPublished - 1 Jan 1993

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