English

Are Th doped Y2C3 and La2C3 two-band superconductors?

Superconductivity 2007-05-23 v2

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.

Keywords

Cite

@article{arxiv.cond-mat/0406527,
  title  = {Are Th doped Y2C3 and La2C3 two-band superconductors?},
  author = {I. A. Sergienko},
  journal= {arXiv preprint arXiv:cond-mat/0406527},
  year   = {2007}
}

Comments

2+ pages. Proceedings of SCES'04. Final version. Added discussion on relevance to CePt3Si