Triplet superconductivity supported by an X${}_9$ high-order Van Hove singularity

Chethan Sanjeevappa, Anirudh Chandrasekaran, Joseph J. Betouras

We study a four-fold symmetric dispersion relation of a quantum material, which exhibits a single high-order Van Hove singularity of X${}_9$ type at the Fermi energy. First, we analy…