Nonequilibrium ac josephson effect in mesoscopic Nb-InAs-Nb junctions

K. W. Lehnert, N. Argaman, H. R. Blank, K. C. Wong, S. J. Allen, E. L. Hu, H. Kroemer

Research output: Contribution to journalArticlepeer-review

44 Scopus citations


Microwave irradiation of Nb-InAs-Nb junctions reveals frequency-doubled Josephson currents which persist to high temperatures, in the absence of a critical current. A nonequilibrium dynamical model, based on time-dependent Andreev bound states, successfully accounts for the resulting half-integer Shapiro step and an enhancement in the conductance near zero bias.

Original languageEnglish
Pages (from-to)1265-1268
Number of pages4
JournalPhysical Review Letters
Issue number6
StatePublished - 1 Jan 1999
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy


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