Comment on ``Unified Formalism of Andreev Reflection at a Ferromagnet/Superconductor Interface''

Matthias Eschrig, Alexander A. Golubov, Igor I. Mazin, Boris Nadgorny, Yukio Tanaka, Oriol T. Valls, Igor Zutic

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Recently, a ‘‘unified’’ Andreev reflection (AR) formalism, claimed to be ‘‘the most general to date,’’ was suggested by Chen et al. Here, we show that while there are numerous works correctly solving the problem formulated in work by Chen et al. for arbitrary spin polarization P, Chen et al. fail to correctly incorporate P≠0 effects and is incompatible with basic physical laws.
Original languageEnglish
Article number139703
JournalPhysical Review Letters
Issue number139703
Publication statusPublished - 24 Sept 2013

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