Superconducting proximity effect in mesoscopic superconductor/normal-metal junctions

Hideaki Takayanagi, Vladimir N. Antonov, Etsuko Toyoda

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Abstract

The superconducting proximity effect is discussed in mesoscopic superconductor/normal-metal junctions. The newly-developed theory shows long-range phase-coherent effect which explaines early experimental results of giant magnetoresistance oscillations in an Andreev interferometer. The theory also shows that the proximity correction to the conductance (PCC) has a reentrant behavior as a function of energy. The reentrant behavior is systematically studied in a gated superconductor-semiconductor junction. A negative PCC is observed in the case of a weak coupling between the normal metal and the external reservoir. Phase coherent ac effect is also observed when rf is irradiated to the junction.

Original languageEnglish
Pages (from-to)S148-S154
JournalJournal of the Korean Physical Society
Volume34
Issue numberSUPPL. 2
Publication statusPublished - 1999
Externally publishedYes

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