Pressure evolution of the magnetic field induced ferromagnetic fluctuation through the pseudo-metamagnetism of CeRu2Si2

Dai Aoki, Carley Paulsen, Tatsuma D. Matsuda, Liam Malone, Georg Knebel, Pierre Haen, Pascal Lejay, Rikio Settai, Yoshichika Onuki, Jacques Flouquet

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

Resistivity measurements performed under pressure in the paramagnetic ground state of CeRu2Si2 are reported. They demonstrate that the relative change of effective mass through the pseudo metamagnetic transition is invariant under pressure. The results are compared with the first order metamagnetic transition due to the antiferromagnetism of Ceo.9Lao.1Ru2Si2 which corresponds to the "negative" pressure of CeRu 2Si2 by volume expansion. Finally, we describe the link between the spin-depairing of quasiparticles on CeRu2Si2 and that of Cooper pairs on the unconventional heavy fermion superconductor CeCoIn5.

Original languageEnglish
Article number053702
Journaljournal of the physical society of japan
Volume80
Issue number5
DOIs
Publication statusPublished - 2011 May
Externally publishedYes

Keywords

  • CeCoIn
  • CeRuSi
  • Effective mass
  • Pseudo-metamagnetism

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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