Superconducting Gap Structure of [Formula presented] Probed by Thermal Conductivity Tensor

K. Izawa, H. Yamaguchi, Yuji Matsuda, T. Sasaki

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The thermal conductivity of organic superconductor [Formula presented] [Formula presented] has been studied in a magnetic field rotating within the 2D superconducting planes with high alignment precision. At low temperatures ([Formula presented]), a clear fourfold symmetry in the angular variation, which is characteristic of a [Formula presented]-wave superconducting gap with nodes along the directions rotated [Formula presented] relative to the [Formula presented] and [Formula presented] axes of the crystal, was resolved. The determined nodal structure is inconsistent with recent theoretical predictions of superconductivity induced by the antiferromagnetic spin fluctuation.

Original languageEnglish
Number of pages1
JournalPhysical Review Letters
Issue number2
Publication statusPublished - 2002 Jan 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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