Abstract

Nonlinear dynamics of a single Josephson junction under radio-frequency excitation is analyzed by a model which takes into account interference effects and by means of numerical simulations. The study emphasizes the existence of a crisis, which is followed by chaotic transients over a portion of its state space. The mean lifetime is found to scale as |ω-ω c| −δ, where ω is the frequency of the external excitation, ω c is its value at the crisis, and δ is the critical exponent.

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