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Thermal Conductivity of superconducting (TMTSF)_2ClO_4: evidence for a nodeless gap

Stéphane Belin·Kamran Behnia
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Abstract

We report on the first measurements of thermal conductivity in the superconducting state of (TMTSF)_2ClO_4. The electronic contribution to heat transport is found to decrease rapidly below T_c, indicating the absence of low-energy electronic excitations. We argue that this result provides strong evidence for a nodeless superconducting gap function but does not exclude a possible unconventional order parameter.

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Stéphane Belin, Kamran Behnia. 1997-06-03. Thermal Conductivity of superconducting (TMTSF)_2ClO_4: evidence for a nodeless gap. https://doi.org/10.1103/physrevlett.79.2125

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