We report first principles calculations of the electronic structure and electron-phonon coupling in the non-centrosymmetric superconductor LaNiC2. These show that the material is a conventional electron-phonon superconductor with intermediate coupling. There are large contributions to the coupling by two low frequency C non-bond-stretching modes, one of which has strong Kohn anomalies. Since LaNiC2 lacks inversion symmetry, the pairing is of dominant s-wave type with some mixture of p-wave character. This will give exponential decay in the specific heat.
@article{arxiv.0905.0511,
title = {Electron-phonon superconductivity in non-centrosymmetric LaNiC$_2$: first principles calculations},
author = {A. Subedi and D. J. Singh},
journal= {arXiv preprint arXiv:0905.0511},
year = {2015}
}