Phys. Rev. Lett. 101, 046401 (2008) [4 pages]Multigap Superconductivity in the Heavy-Fermion System CeCoIn5Received 6 March 2008; published 21 July 2008 New thermal conductivity experiments on the heavy-fermion superconductor CeCoIn5 down to 10 mK rule out the suggested existence of unpaired electrons. Moreover, they reveal strong multigap effects with a remarkably low “critical” field Hc2S for the small gap band, showing that the complexity of heavy-fermion band structure has a direct impact on their response under magnetic field. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.046401
DOI:
10.1103/PhysRevLett.101.046401
PACS:
71.27.+a, 74.25.Fy, 74.25.Op, 74.70.Tx
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