Theory of Andreev bound states in S-F-S junctions and S-F proximity devices

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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 cross- link wave-function and Green-function theories.
Original languageEnglish
Pages (from-to)1-30
Number of pages30
JournalPhilosophical Transactions of the Royal Society of London A: Mathematical, Physical and Engineering Sciences
Volume376
Issue number2125
DOIs
Publication statusPublished - 25 Jun 2018

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