Properties of Odd Gap Superconductors

Details Properties of Odd Gap Superconductors Properties of Odd Gap Superconductors

1995-03-13

arxiv.org/abs/cond-mat/9503071v1

Physics

Condensed Matter

11 pages, uuencoded postscript.

Scientific paper

10.1103/PhysRevB.52.1271

We discuss the class of superconductors which have pairing correlations which are odd in frequency, as introduced originally by Berezinskii and more recently by Balatsky and Abrahams. As follows from the equations of motion, a natural definition of the thermodynamic order parameter of the odd-pairing state is the expectation value of a composite operator which couples a Cooper pair to a spin or charge fluctuation. We use a model pairing hamiltonian to describe properties of the odd-pairing composite-operator condensate. We show that the superfluid stiffness is positive, we discuss superconductive tunneling with an ordinary superconductor and we derive other thermodynamic and transport properties.

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