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Published on: November 9, 2012
Theory of Andreev bound states in S-F-S junctions and S-F proximity devices
1Department of Physics, Royal Holloway, University of London, Egham, Surrey TW20 0EX, UK matthias.eschrig@rhul.ac.uk.
Abstract:
Andreev bound states are an expression of quantum coherence between particles and holes in hybrid structures composed of superconducting and non-superconducting metallic parts. Their spectrum carries important information on the nature of the pairing, and determines the current in Josephson devices. Here, I focus on Andreev bound states in systems involving superconductors and ferromagnets with strong spin-polarization. I provide a general framework for non-local Andreev phenomena in such structures in terms of coherence functions, and show how the latter link wave function and Green-function based theories.This article is part of the theme issue 'Andreev bound states'.
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