Reviews of topical problems

Localized superconductivity of twin metal crystals

a Kapitza Institute of Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow, 117334, Russian Federation

The new phenomenon of twinning plane superconductivity is reviewed. It has already been observed in several metals. The superconductivity is localized near a twinning plane and it appears at a temperature higher than the critical temperature of the superconducting transition of a bulk metal. The phase diagram for the twinning-plane superconductivity, plotted using the magnetic field and temperature as the coordinates, is very different for type I and type II superconductors. A detailed analysis of the experimental data on the twinning-plane superconductivity is accompanied by a theoretical description of the phenomenon. The presence of a dense twinned structure may increase considerably the critical temperature: for example, in the case of tin it has been possible to increase this temperature more than threefold. We shall discuss also the data showing that the twinning-plane superconductivity can play an important role in the recently discovered high-temperature superconductors.

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Fulltext is also available at DOI: 10.1070/PU1988v031n05ABEH003545
PACS: 74.25.Dw, 61.72.Mm, 74.20.De, 74.25.Ha, 74.25.Op (all)
DOI: 10.1070/PU1988v031n05ABEH003545
Citation: Khlyustikov I N, Buzdin A I "Localized superconductivity of twin metal crystals" Sov. Phys. Usp. 31 409–433 (1988)
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Оригинал: Хлюстиков И Н, Буздин А И «Локализованная сверхпроводимость в двойниковых металлических кристаллах» УФН 155 47–88 (1988); DOI: 10.3367/UFNr.0155.198805b.0047

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