Abstract:
We consider the dynamics of the overdamped Josephson junction under the influence of an external quasiperiodic driving field. In dependence on parameter values either a quasiperiodic motion or a strange nochaotic attractor (SNA) can be observed. The latter corresponds to a resistive state in the current-voltage characteristics while for quasiperiodic motion a finite superconducting current exists for zero voltage. It is shown that in the case of SNA a nonzero mean voltage across the junction can appear due to symmetry breakings. Based on this observation a detailed symmetry consideration of the generalized equation of motion is performed and symmetry conditions ensuring zero mean voltage across the junction are found.
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Received 16 August 2001 and Received in final form 22 January 2002
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Neumann, E., Pikovsky, A. Quasiperiodically driven Josephson junctions: strange nonchaotic attractors, symmetries and transport. Eur. Phys. J. B 26, 219–228 (2002). https://doi.org/10.1140/epjb/e20020083
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DOI: https://doi.org/10.1140/epjb/e20020083