Interactions for odd-omega gap singlet superconductors

Elihu Abrahams, Alexander Balatsky, J. R. Schrieffer +1

A class of singlet superconductors with a gap function $\Delta (\mathbf{k},{\omega }_n)$ which is {\it odd} in both momentum and Matsubara frequency was proposed recently \cite{ba}. To show an ins…