Consequences of the local spin self-energy approximation on the heavy-fermion quantum phase transition

Ping Sun, B Kotliar

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

We show, using the periodic Anderson model, that the local spin self-energy approximation, as implemented in the extended dynamical mean field theory (EDMFT), results in a first-order phase transition that persists to T=0. Around the transition, there is a finite coexistence region of the paramagnetic and antiferromagnetic (AFM) phases. The region is bounded by two critical transition lines that differ by an electron-hole bubble at the AFM ordering wave vector.

Original languageEnglish (US)
Article number245104
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number24
DOIs
StatePublished - Jun 15 2005

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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