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Interfacial roughness and proximity effects in superconductor/ferromagnet CuNi/Nb heterostructures

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dc.contributor.author Khaydukov Y.
dc.contributor.author Morari R.
dc.contributor.author Soltwedel O.
dc.contributor.author Keller T.
dc.contributor.author Christiani G.
dc.contributor.author Logvenov G.
dc.contributor.author Kupriyanov M.
dc.contributor.author Sidorenko A.
dc.contributor.author Keimer B.
dc.date.accessioned 2018-09-18T20:04:39Z
dc.date.available 2018-09-18T20:04:39Z
dc.date.issued 2015
dc.identifier.issn 0021-8979
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/136278
dc.description.abstract © 2015 AIP Publishing LLC. We report an investigation of the structural and electronic properties of hybrid superconductor/ferromagnet (S/F) bilayers of composition Nb/Cu60Ni40 prepared by magnetron sputtering. X-ray and neutron reflectometry show that both the overall interfacial roughness and vertical correlations of the roughness of different interfaces are lower for heterostructures deposited on Al2O3(1 1 ¯ 02) substrates than for those deposited on Si(111). Mutual inductance experiments were then used to study the influence of the interfacial roughness on the superconducting transition temperature, TC. These measurements revealed a ∼4% higher TC in heterostructures deposited on Al2O3, compared to those on Si. We attribute this effect to a higher mean-free path of electrons in the S layer, caused by a suppression of diffusive scattering at the interfaces. However, the dependence of the TC on the thickness of the ferromagnetic layer is not significantly different in the two systems, indicating a weak influence of the interfacial roughness on the transparency for Cooper pairs.
dc.relation.ispartofseries Journal of Applied Physics
dc.title Interfacial roughness and proximity effects in superconductor/ferromagnet CuNi/Nb heterostructures
dc.type Article
dc.relation.ispartofseries-issue 21
dc.relation.ispartofseries-volume 118
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS00218979-2015-118-21-SID84949009012


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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