Probing the nodal structure in quasi-2D unconventional superconductors by thermal conductivity

K. Izawa, H. Yamaguchi, Y. Matsuda, T. Sasaki, R. Settai, Y. Onuki

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The superconducting gap structure is an unresolved issue in most of unconventional superconductors. Here we measured the thermal conductivity of 2D unconventional superconductors, spin-triplet Sr2RuO4, heavy fermion CeCoIn5 and organic κ-(BEDT-TTF)2Cu(NCS)2, in magnetic field rotating within the 2D planes. On the basis of the angular variation in the thermal conductivity, we demonstrate that the gap function is d(k) = Δ0ẑ(kx + iky)(cos ckz + α) for Sr2RuO4, dx(2)-y(2) for CeCoIn5, and dxy for κ-(BEDT-TTF)2Cu(NCS)2.

Original languageEnglish
Pages (from-to)1055-1059
Number of pages5
JournalJournal of Physics and Chemistry of Solids
Issue number6-8
Publication statusPublished - 2002 Jun 1
Externally publishedYes
EventProceedings of the 8th ISSP International Symposium - Tokyo, Japan
Duration: 2001 Nov 22001 Nov 5


  • A. Superconductors
  • D. Superconductivity
  • D. Thermal conductivity

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics


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