Anomalous de Haas-van Alphen oscillations in CeCoIn5

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

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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 - 2005 May 13
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    McCollam, A., Julian, S. R., Rourke, P. M. C., Aoki, D., & Flouquet, J. (2005). Anomalous de Haas-van Alphen oscillations in CeCoIn5. Physical review letters, 94(18), [186401]. https://doi.org/10.1103/PhysRevLett.94.186401