Quantum Critical Quasiparticle Scattering within the Superconducting State of CeCoIn_{5}.

@article{Paglione2016QuantumCQ,
title={Quantum Critical Quasiparticle Scattering within the Superconducting State of CeCoIn\_\{5\}.},
author={Johnpierre Paglione and Makariy A. Tanatar and J. P. Reid and Hamideh Shakeripour and Cedomir Petrovic and Louis Taillefer},
journal={Physical review letters},
year={2016},
volume={117 1},
pages={
016601
}
}
The thermal conductivity κ of the heavy-fermion metal CeCoIn_{5} was measured in the normal and superconducting states as a function of temperature T and magnetic field H, for a current and field parallel to the [100] direction. Inside the superconducting state, when the field is lower than the upper critical field H_{c2}, κ/T is found to increase as T→0, just as in a metal and in contrast to the behavior of all known superconductors. This is due to unpaired electrons on part of the Fermi…
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