Thermal-Hall conductivity and long-lived quasiparticles in CeCoIn$_5$

Details Thermal-Hall conductivity and long-lived quasiparticles in CeCoIn$_5$ Thermal-Hall conductivity and long-lived quasiparticles in CeCoIn$_5$

2006-10-25

arxiv.org/abs/cond-mat/0610713v1

Physics

Condensed Matter

Superconductivity

2 pages, 2 figures, proceedings of M2S-HTSC-VIII, Dresden 2006

Scientific paper

10.1016/j.physc.2007.03.080

In CeCoIn$_5$, the thermal conductivity $\kappa_{xx}$ and Hall conductivity
$\kappa_{xy}$ below $T_c$ display large anomalies below $T_c$. The strong
suppression of the anomalies in weak fields implies the existence of long-lived
quasiparticles. We also discuss briefly the Wiedemann-Franz ratio and the
existence of a strongly field-dependent spin-fluctuation heat current.

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