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Type-1.5 Superconductivity in Multiband and Other Multicomponent Systems
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Statistical Physics.
KTH, School of Engineering Sciences (SCI), Theoretical Physics.
2013 (English)In: Journal of Superconductivity and Novel Magnetism, ISSN 1557-1939, E-ISSN 1557-1947, Vol. 26, no 5, p. 2045-2055Article in journal (Refereed) Published
Abstract [en]

Usual superconductors are classified into two categories: of type-1 when the ratio of the magnetic field penetration length (lambda) to coherence length (xi) kappa = lambda/xi < 1/root 2 and of type-2 when kappa > 1/root 2. The boundary case kappa = 1/root 2 is also considered to be a special situation, frequently termed as "Bogomolnyi limit". Here we discuss multicomponent systems which can possess three or more fundamental length scales and allow a separate superconducting state, which was recently termed "type-1.5". In that state, a system has the following hierarchy of coherence and penetration lengths xi(1) < root 2 lambda < xi(2). We also briefly overview the works on single-component regime kappa approximate to 1/root 2 and comment on recent discussion by Brandt and Das in the proceedings of the previous conference in this series.

Place, publisher, year, edition, pages
2013. Vol. 26, no 5, p. 2045-2055
Keywords [en]
Ginzburg-Landau theory, Type 1.5 superconductivity
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-129477DOI: 10.1007/s10948-012-1951-0ISI: 000323906600118OAI: oai:DiVA.org:kth-129477DiVA, id: diva2:652543
Funder
Knut and Alice Wallenberg FoundationSwedish Research Council
Note

QC 20131001

Available from: 2013-10-01 Created: 2013-09-30 Last updated: 2017-12-06Bibliographically approved

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