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Expansion of a superconducting vortex core into a diffusive metal

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dc.contributor.author Stolyarov V.
dc.contributor.author Cren T.
dc.contributor.author Brun C.
dc.contributor.author Golovchanskiy I.
dc.contributor.author Skryabina O.
dc.contributor.author Kasatonov D.
dc.contributor.author Khapaev M.
dc.contributor.author Kupriyanov M.
dc.contributor.author Golubov A.
dc.contributor.author Roditchev D.
dc.date.accessioned 2019-01-22T20:54:56Z
dc.date.available 2019-01-22T20:54:56Z
dc.date.issued 2018
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/149398
dc.description.abstract © 2018 The Author(s). Vortices in quantum condensates exist owing to a macroscopic phase coherence. Here we show, both experimentally and theoretically, that a quantum vortex with a well-defined core can exist in a rather thick normal metal, proximized with a superconductor. Using scanning tunneling spectroscopy we reveal a proximity vortex lattice at the surface of 50 nm - thick Cu-layer deposited on Nb. We demonstrate that these vortices have regular round cores in the centers of which the proximity minigap vanishes. The cores are found to be significantly larger than the Abrikosov vortex cores in Nb, which is related to the effective coherence length in the proximity region. We develop a theoretical approach that provides a fully self-consistent picture of the evolution of the vortex with the distance from Cu/Nb interface, the interface impedance, applied magnetic field, and temperature. Our work opens a way for the accurate tuning of the superconducting properties of quantum hybrids.
dc.title Expansion of a superconducting vortex core into a diffusive metal
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 9
dc.collection Публикации сотрудников КФУ
dc.source.id SCOPUS-2018-9-1-SID85048438366

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  • Публикации сотрудников КФУ Scopus [22633]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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