Anomalous de Haas-van Alphen oscillations in CeCoIn5

  • A. McCollam
  • , S. R. Julian
  • , P. M.C. Rourke
  • , D. Aoki
  • , J. Flouquet

Research output: Contribution to journalArticlepeer-review

Abstract

We present de Haas-van Alphen oscillation measurements showing a strong spin dependence of the quasiparticle mass enhancement in the heavy fermion superconductor CeCoIn5 at high magnetic fields. There is evidence that the Fermi-liquid temperature dependence of the oscillations, embodied in the Lifshitz-Kosevich equation, is breaking down on the most strongly renormalized Fermi surface sheets.

Original languageEnglish
Article number186401
JournalPhysical Review Letters
Volume94
Issue number18
DOIs
Publication statusPublished - 13 May 2005
Externally publishedYes

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