Giant Shapiro Resonances in a Flux Driven Josephson Junction Necklace

Details Giant Shapiro Resonances in a Flux Driven Josephson Junction Necklace Giant Shapiro Resonances in a Flux Driven Josephson Junction Necklace

1993-03-02

arxiv.org/abs/cond-mat/9303013v1

Physics

Condensed Matter

8 pages RevTeX, 3 figures available upon request

Scientific paper

10.1103/PhysRevB.47.8365

We present a detailed study of the dynamic response of a ring of $N$ equally spaced Josephson junctions to a time-periodic external flux, including screening current effects. The dynamics are described by the resistively shunted Josephson junction model, appropriate for proximity effect junctions, and we include Faraday's law for the flux. We find that the time-averaged $I-V$ characteristics show novel {\em subharmonic giant Shapiro voltage resonances}, which strongly depend on having phase slips or not, on $N$, on the inductance and on the external drive frequency. We include an estimate of the possible experimental parameters needed to observe these quantized voltage spikes.

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