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Nonequilibrium supercurrents in mesoscopic NbInAsNb junctions

✍ Scribed by K.W Lehnert; N Argaman; H.-R Blank; K.C Wong; S.J Allen; E.L Hu; H Kroemer

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
231 KB
Volume
47
Category
Article
ISSN
0167-9317

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✦ Synopsis

Microwave irradiation of Nb-InAs-Nb single-junctions demonstrates that the half-integer Shapiro step is caused by ac nonequilibrium supercurrents. In addition, nonequilibrium dc supercurrents are observed as a conductance enhancement around zero bias. Both effects persist to temperatures integer Shapiro step.

well above the disappearance of the equilibrium critical current and

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