Are Th doped Y2C3 and La2C3 two-band superconductors?
arXiv:cond-mat/0406527 · doi:10.1016/j.physb.2005.01.147
Abstract
The superconducting sesquicarbides R2C3 have noncentrosymmetric point group symmetry Td. Spin-orbit coupling lifts the spin degeneracy of electronic bands in the most of the Brillouin zone. Nevertheless, due to high symmetry, there are a few directions along which the Fermi surfaces must touch. This leads to the two-band effects in the superconducting state.
2+ pages. Proceedings of SCES'04. Final version. Added discussion on relevance to CePt3Si