Effect of band dispersion for renormalized gap on periodic Anderson model in infinite dimensions

Yukihiro Shimizu, O. Sakai, A. C. Hewson

Research output: Contribution to journalConference article

Abstract

We investigate the effect of f-electron band dispersion on the renormalized gap in a periodic Anderson model in infinite dimensions by employing the dynamical mean field theory and the numerical renormalization group method. When the non-interacting DOS of f-electron has a complete-gap, pseudo-gap and gap-less structure, respectively, in the electron-hole symmetric case, an interacting DOS at low energies has the same structure which is renormalized by the electron correlation. The degree of renormalization is almost constant for the case having the complete gap, however, the renormalization in the pseudo-gap regime becomes stronger with increasing the dispersion of f-electron. For a weak electron-hole asymmetric case, nf to approximately 0.9, a peak structure in PES region is nearly the same as that for symmetric case, but a peak in BIS region becomes broad.

Original languageEnglish
Pages (from-to)317-318
Number of pages2
JournalPhysica B: Condensed Matter
Volume281-282
DOIs
Publication statusPublished - 2000 Jun 1
EventYamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn
Duration: 1999 Aug 241999 Aug 28

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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