Pairing symmetry conversion by spin-active interfaces in superconducting junctions

Details Pairing symmetry conversion by spin-active interfaces in superconducting junctions Pairing symmetry conversion by spin-active interfaces in superconducting junctions

2009-02-07

arxiv.org/abs/0902.1225v1

Phys. Rev. Lett. 102, 107008 (2009)

Physics

Condensed Matter

Superconductivity

4 pages, 4 figures. Accepted for publication in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.102.107008

We study the proximity-induced superconducting correlations in a normal metal connected to a superconductor when the interface between them is spin-active and the normal metal is ballistic or diffusive. Remarkably, for any interface spin polarization there is a critical interface resistance, above which the conventional even-frequency proximity component vanishes completely at the chemical potential, while the odd-frequency component remains finite. We propose a way to unambiguously observe the odd-frequency component.

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