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arxiv: cond-mat/9901006 · v1 · submitted 1999-01-03 · ❄️ cond-mat.supr-con · cond-mat.mes-hall

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 (University of California Santa Barbara , Santa Barbara CA) This is my paper
classification ❄️ cond-mat.supr-con cond-mat.mes-hall
keywords josephsonjunctionsnb-inas-nbnonequilibriumabsenceaccountsandreevbias
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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.

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