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  • Title: Anomalous de Haas-van Alphen oscillations in CeCoIn5.
    Author: McCollam A, Julian SR, Rourke PM, Aoki D, Flouquet J.
    Journal: Phys Rev Lett; 2005 May 13; 94(18):186401. PubMed ID: 15904385.
    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.
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