Anomalous thermopower and Nernst effect in $\rm CeCoIn_5$: entropy-current loss in precursor state

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dc.creatorOnose, Y.
dc.creatorLi, Lu
dc.creatorPetrovic, C.
dc.creatorOng, N. P.
dc.date2007-05-07
dc.date.accessioned2026-07-07T08:11:14Z
dc.date.available2026-07-07T08:11:14Z
dc.descriptionThe heavy-electron superconductor CeCoIn$_5$ exhibits a puzzling precursor state above its superconducting critical temperature at $T_c$ = 2.3 K. The thermopower and Nernst signal are anomalous. Below 15 K, the entropy current of the electrons undergoes a steep decrease reaching $\sim$0 at $T_c$. Concurrently, the off-diagonal thermoelectric current $α_{xy}$ is enhanced. The delicate sensitivity of the zero-entropy state to field implies phase coherence over large distances. The prominent anomalies in the thermoelectric current contrast with the relatively weak effects in the resistivity and magnetization.
dc.description5 figures, 4 pages
dc.identifierhttps://arxiv.org/abs/0705.0928
dc.identifierhttp://arxiv.org/abs/0705.0928
dc.identifierEurophys. Lett. 79, 17006 (2007)
dc.identifierdoi:10.1209/0295-5075/79/17006
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/132059
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleAnomalous thermopower and Nernst effect in $\rm CeCoIn_5$: entropy-current loss in precursor state
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