Consequences of bulk odd-frequency superconducting states for the classification of Cooper pairs
arXiv:1407.2325 · doi:10.1103/PhysRevB.90.094512
Abstract
We analyze symmetries and magnetic properties of Cooper pairs appearing as subdominant pairing correlations in inhomogeneous superconductors, on the basis of the quasiclassical Green-function theory. The frequency symmetry, parity, and the type of magnetic response of such subdominant correlations are opposite to those of the dominant pairing correlations in the bulk state. Our conclusion is valid even when we generalize the theory of superconductivity to recently proposed diamagnetic odd-frequency superconductors. As a consequence, Cooper pairs are classified into eight classes in terms of their symmetries and magnetic properties. Anomalous magnetic properties of subdominant components can be probed by studying the Meissner effect.
9 pages. Version 2: final version as published in PRB
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- Odd-frequency pairing and Ising spin susceptibility in time-reversal invariant superfluids and superconductors
- Quasiparticle on Bogoliubov Fermi Surface and Odd-Frequency Cooper Pair
- Paramagnetic Meissner, vortex and 'onion' ground states in Fulde-Ferrell finite-size superconductor