Abstract
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 language | English |
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Pages (from-to) | 1055-1059 |
Number of pages | 5 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 63 |
Issue number | 6-8 |
DOIs | |
Publication status | Published - 2002 Jun 1 |
Externally published | Yes |
Event | Proceedings of the 8th ISSP International Symposium - Tokyo, Japan Duration: 2001 Nov 2 → 2001 Nov 5 |
Keywords
- A. Superconductors
- D. Superconductivity
- D. Thermal conductivity
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics