Consequences of bulk odd-frequency superconducting states for the classification of Cooper pairs

Yasuhiro Asano; Yakov V. Fominov; Yukio Tanaka

doi:10.1103/PhysRevB.90.094512

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Consequences of bulk odd-frequency superconducting states for the classification of Cooper pairs

Yasuhiro Asano, Yakov V. Fominov, Yukio Tanaka

DOI 10.1103/PhysRevB.90.094512 · Physical Review B

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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.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown