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Thermal conductivity of heavy-fermion superconductor URu2Si2

Authors
Journal
Physica C Superconductivity
0921-4534
Publisher
Elsevier
Publication Date
Volume
196
Identifiers
DOI: 10.1016/0921-4534(92)90137-2
Disciplines
  • Physics

Abstract

Abstract The thermal conductivity of a URu 2Si 2 single crystal was studied as a function of temperature (between 40 mK and 2 K) and magnetic field (up to 7 T). At the onset of superconductivity, the electronic contribution counts roughly for half the overall thermal conductivity revealing an important lattice contribution. An electron-phonon coupling parameter is found which is much smaller than that for conventional superconductors. The field dependence of the thermal conductivity at various temperatures is highly anisotropic and confirms the presence of multiple types of heat carriers.

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