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Long-range ballistic transport mechanisms in superconducting spintronics

 a, b,  a, b,  c
a Institute for Physics of Microstructures, Russian Academy of Sciences, ul. Ul'yanova 46, Nizhnii Novgorod, 603950, Russian Federation
b Lobachevsky State University of Nizhny Novgorod (National Research University), prosp. Gagarina 23, Nizhny Novgorod, 603950, Russian Federation
c University of Bordeaux, LOMA UMR-CNRS 5798, Talence Cedex, F-33405, France

We present a review of mechanisms responsible for the long-range Josephson transport in ballistic hybrid structures superconductor/ferromagnet/superconductor (SFS) with the exchange field modulated either in coordinate or momentum space. These mechanisms are based on the suppression of the destructive interference of electronic and hole waves in the ferromagnet caused by the exchange field. The interference suppression results in the slow decay of the singlet component of the pair correlation function in a ferromagnet and increase in the Josephson current in SFS structures.

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Fulltext is also available at DOI: 10.3367/UFNe.2016.02.037769
Keywords: spintronics, superconductor—ferromagnet hybrids, Josephson effect, proximity effect, triplet superconductivity
PACS: 74.45.+c, 74.78.Na, 85.25.Cp (all)
DOI: 10.3367/UFNe.2016.02.037769
Citation: Samokhvalov A V, Mel’nikov A S, Buzdin A I "Long-range ballistic transport mechanisms in superconducting spintronics" Phys. Usp. 59 571–576 (2016)
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Received: 4th, April 2016, 4th, February 2016

Оригинал: Самохвалов А В, Мельников А С, Буздин А И «Механизмы дальнодействующего баллистического транспорта в сверхпроводящей спинтронике» УФН 186 640–646 (2016); DOI: 10.3367/UFNr.2016.02.037769

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