Pairing symmetry conversion by spin-active interfaces in magnetic normal-metal-superconductor junctions.
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.
Linder
Jacob
J
Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
Yokoyama
Takehito
T
Sudbø
Asle
A
Eschrig
Matthias
M