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arXiv · 1310.4523

Superconductivity in non-centrosymmetric LaNiC2

Soumya P. Mukherjee·Stephanie H. Curnoe
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Abstract

We present a discussion of superconductivity in non-centrosymmetric superconductors with spin-orbit coupling. A general expression for the quasiparticle excitation energy is derived. The superconducting states for the point group C2v are classified by symmetry in the limit of weak spin-orbit coupling. A non-unitary triplet pairing gap function can account for observations of broken time-reversal symmetry and nodes in the superconducting state of LaNiC2; however such a gap function also has a gapless branch and requires vanishing spin-orbit coupling.

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Soumya P. Mukherjee, Stephanie H. Curnoe. 2013-10-16. Superconductivity in non-centrosymmetric LaNiC2. https://doi.org/10.1016/j.physc.2014.01.008

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