Volume 75, Number 2, July 2006
|Page(s)||308 - 314|
|Section||Condensed matter: electronic structure, electrical, magnetic, and optical properties|
|Published online||16 June 2006|
Exotic pairing instability in the heavy-fermion superconductor
Max-Planck-Institute for Solid State Research - Heisenbergstr.1, D-70569 Stuttgart Germany
2 Los Alamos National Laboratory, Theoretical Division - Los Alamos, NM 87545, USA
Accepted: 29 May 2006
Superconductivity in the heavy-fermion compound has recently been found to be due to multiple-band effects (Phys. Rev. Lett., 94 (2005) 107005) with a distinct two-gap structure. It is shown here that the enormously enhanced values of the gap ratios with respect to have an unusual origin with the electron dynamics mainly governed by f-p hybridization.
PACS: 74.70.Tx – Heavy-fermion superconductors / 74.20.-z – Theories and models of superconducting state / 74.20.Rp – Pairing symmetries (other than s-wave)
© EDP Sciences, 2006
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