On p-Wave Pairing Superconductivity under Hexagonal and Tetragonal Symmetries

Abstract

A group-theoretical classification of p-wave pairing superconductiong states is made for systems with hexagonal and tetragonal crystalline symmetries in the absense of the spin-orbit coupling. For each symmetry ten inert p-pairing states are enumerated. In some of them the energy gap vanishes on lines of the Fermi surface.