Critical temperature and interface transparency of N/S/N triple layers: theory and experiment

V. N. Kushnir, S. L. Prischepa, C. Cirillo and C. Attanasio ()

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 52, issue 1, 9-14

Abstract: The influence of the finite transparency, ${\mathcal T}$ , of superconductor/normal metal (S/N) interface on the critical temperature of proximity coupled layered structures is investigated in the dirty limit on the basis of the microscopic equations solved exactly by a matrix method. The calculated theoretical curves satisfactory reproduce the experimental dependencies of the critical temperature on the thickness of the superconducting layers in N/S/N trilayers. The relation between the transparency coefficient and the normal metal coherence length is also discussed. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 74.45.+c Proximity effects; Andreev effect; SN and SNS junctions, 74.78.Fk Multilayers, superlattices, heterostructures, (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00264-0

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