Anomalous changes of Fermi surface and Hall coefficient at quantum critical point

Hiroshi Watanabe, Masao Ogata

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Motivated by the Hall-effect experiments in YbRh2 Si2, we study the ground state and Fermi surface (FS) of a Kondo lattice model in a two-dimensional square lattice with variational Monte Carlo method. We have found the simultaneous occurrence of the antiferromagnetic transition and the FS reconstruction (topological transition) without the breakdown of the Kondo screening. This phase transition is accompanied by the jump of the Hall coefficient and considered to be consistent with the experiment.

Original languageEnglish
Pages (from-to)1390-1392
Number of pages3
JournalPhysica B: Condensed Matter
Volume403
Issue number5-9
DOIs
Publication statusPublished - 2008 Apr 1
Externally publishedYes

Keywords

  • Kondo lattice model
  • Quantum critical point
  • Topological phase transition

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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