Pairing Symmetry Conversion by Spin-Active Interfaces in Magnetic Normal-Metal–Superconductor Junctions

Jacob Linder, Takehito Yokoyama, Asle Sudbø, and Matthias Eschrig
Phys. Rev. Lett. 102, 107008 – Published 13 March 2009

Abstract

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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  • Received 16 September 2008

DOI:https://doi.org/10.1103/PhysRevLett.102.107008

©2009 American Physical Society

Authors & Affiliations

Jacob Linder1, Takehito Yokoyama2, Asle Sudbø1, and Matthias Eschrig3

  • 1Department of Physics, Norwegian University of Science and Technology, N-7491 Trondheim, Norway
  • 2Department of Applied Physics, Nagoya University, Nagoya, 464-8603, Japan
  • 3Institut für Theoretische Festkörperphysik and DFG-Center for Functional Nanostructures, Universität Karlsruhe, D-76128 Karlsruhe, Germany

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Vol. 102, Iss. 10 — 13 March 2009

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