Multiband superconductivity in NbSe_2 from heat transport
arXiv:cond-mat/0304499 · doi:10.1016/j.physc.2004.03.055
Abstract
The thermal conductivity of the layered s-wave superconductor NbSe_2 was measured down to T_c/100 throughout the vortex state. With increasing field, we identify two regimes: one with localized states at fields very near H_c1 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.
2 pages, 2 figures, submitted to M2S-Rio 2003 Proceedings
References in corpus (3)
- Heat Conduction in the Vortex State of NbSe_2: Evidence for Multi-Band Superconductivity
- Muon-Spin Rotation Measurements of the Magnetic Field Dependence of the Vortex-Core Radius and Magnetic Penetration Depth in NbSe2
- Low-Field Anomaly in the Specific Heat of s-wave Superconductors due to the Expansion of the Vortex Cores