Organic quasi-one-dimensional superconductors: quasiparticle density of states and spin susceptibility

We perform a group theoretical analysis of the possible symmetries of the order parameter of quasi-one-dimensional superconductors. We relate the order parameter symmetry of these systems to the bulk quasiparticle density of states and the bulk uniform spin susceptibility tensor at finite temperatures. Current experimental results suggest that some organic quasi-one-dimensional superconductors may exhibit triplet pairing symmetry, thus we attempt to narrow down the number of possibilities for the symmetry of the order parameter based on the current experimental evidence