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

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.

4 pages including 4 figures, submitted to Phys. Rev. Lett

References in corpus (1)

• Universal Heat Conduction in YBa_2Cu_3O_6.9

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