Comparison between Ce and Yb heavy fermion compounds: CeRh2 Si2 versus YbRh2 Si2

R. Boursier, A. Villaume, G. Lapertot, D. Aoki, G. Knebel, J. Flouquet

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The similarities and differences of the pressure and magnetic field phase diagrams of the heavy fermion systems CeRh2 Si2 and YbRh2 Si2 are reviewed. In CeRh2 Si2 the transition from antiferromagnetic order to a paramagnetic state seems to be first order with a clear volume discontinuity. Drastic differences appear not only in the pressure dependence of their Néel temperature but also in their magnetic field response as a comparison of the CeRu2 Si2 case with YbRh2 Si2 shows which reflects the position of their quantum critical field with respect to the magnetic field Kondo scale. However, a new generation of experiments in extreme conditions is required: very high magnetic field for CeRh2 Si2, very low temperature for YbRh2 Si2.

Original languageEnglish
Pages (from-to)726-730
Number of pages5
JournalPhysica B: Condensed Matter
Volume403
Issue number5-9
DOIs
Publication statusPublished - 2008 Apr 1
Externally publishedYes

Keywords

  • Heavy fermion
  • High pressure
  • Kondo lattice
  • Quantum criticality

ASJC Scopus subject areas

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

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