Resonant Andreev transmission in two-dimensional array of SNS junctions

We present an experimental study of transport properties of a large two-dimensional array of superconductor–normal-metal–superconductor (SNS) junctions comprised of the nanopatterned superconducting film, ensuring that NS interfaces of our SNS junctions are highly transparent. We find the anomalousl...

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Bibliographic Details
Published inPhysica. C, Superconductivity Vol. 470; pp. S810 - S812
Main Authors Baturina, T.I., Mironov, A.Yu, Vinokur, V.M., Chtchelkatchev, N.M., Glatz, A., Nasimov, D.A., Latyshev, A.V.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.12.2010
Subjects
Andreev reflection
Josephson junction arrays
Nanoscale systems
Nanoscale systems
Andreev reflection
Josephson junction arrays
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Summary:We present an experimental study of transport properties of a large two-dimensional array of superconductor–normal-metal–superconductor (SNS) junctions comprised of the nanopatterned superconducting film, ensuring that NS interfaces of our SNS junctions are highly transparent. We find the anomalously high charge transmission at certain applied voltages commensurate with the magnitude of the gap in superconducting islands. This indicates the nonlocal nature of the charge transfer in multiply connected SNS systems. We propose the mechanism of the correlated transmission of Cooper pairs in large arrays of SNS junctions based on the combined action of the proximity effect and the simultaneous Andreev conversion processes at many NS-interfaces.
ISSN:0921-4534
1873-2143
DOI:10.1016/j.physc.2009.11.107