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Surface Effect on Spatial Length-Scales in a Two-Gap Superconductor
2016 (English)In: JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM, ISSN 1557-1939, Vol. 29, no 12, p. 3087-3091Article in journal (Refereed) Published
Abstract [en]

The healing of two-band superconductivity near its interface is studied. It is demonstrated that the restoration of superconductivity gaps in the immediate vicinity of the interface is governed by two length scales: the first one diverges at critical temperature T (c) , while the second one diverges at T (c+)< T (c) . By moving away from the boundary, the temperature dependencies of characteristic lengths change so that singularity at T (c+) becomes removed in the bulk by arbitrary weak interband coupling. The asymptotes for the spatial behavior of gaps have been found analytically near the surface and approaching the bulk state.

Place, publisher, year, edition, pages
Springer, 2016. Vol. 29, no 12, p. 3087-3091
Keywords [en]
Two-band superconductivity, Surface, Spatial behavior
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:kth:diva-200227DOI: 10.1007/s10948-016-3826-2ISI: 000390030600017Scopus ID: 2-s2.0-84989884329OAI: oai:DiVA.org:kth-200227DiVA, id: diva2:1074130
Note

QC 20170214

Available from: 2017-02-14 Created: 2017-02-14 Last updated: 2017-02-16Bibliographically approved

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Vargunin, Artjom
Condensed Matter Physics

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