Controlling Josephson dynamics by strong microwave fields

B. Chesca, E. Savel'ev, A.L. Rakhmanov, H.J.H. Smilde, Johannes W.M. Hilgenkamp

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3 Citations (Scopus)

Abstract

We observe several sharp changes in the slope of the current-voltage characteristics (CVCs) of thin-film ramp-edge Josephson junctions between YBa2Cu3O7−delta and Nb when applying strong microwave fields. Such behavior indicates an intriguing Josephson dynamics associated with the switching from a parametric excitation regime induced by the magnetic field of the microwave via oscillations of the Josephson critical current to an ac-current-excitation regime triggered by the electric field of the microwave. We propose a model, which describes the observed features on the CVC in terms of microwave-induced multiple switching between running and locked solutions of sine-Gordon equation.
Original languageUndefined
Pages (from-to)094505-
JournalPhysical review B: Condensed matter and materials physics
Volume78
Issue number9
DOIs
Publication statusPublished - 2008

Keywords

  • IR-59954
  • METIS-254345

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