The thermal conductivity of the layered s-wave superconductor NbSe 2 was measured down to Tc/100 throughout the vortex state. With increasing field, we identify two regimes: one with localized states at fields very near Hc1 and one with highly delocalized quasiparticle excitations at higher fields. The two associated length scales are most naturally explained as multi-band superconductivity, with distinct small and large superconducting gaps on different sheets of the Fermi surface.
|Number of pages||2|
|Journal||Physica C: Superconductivity and its Applications|
|State||Published - Aug 2004|
|Event||Proceedings of the International Conference on Materials - Rio de Janeiro, Brazil|
Duration: May 25 2003 → May 30 2003
Bibliographical noteFunding Information:
This work was supported by the Canadian Institute for Advanced Research and funded by NSERC.
- Multi-band superconductivity
- Thermal conductivity
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering