Chaos in long Josephson junctions without external rf driving force.

Chaotic states of rf biased Josephson fluxonic diode

The results of chaos simulations in Josephson Fluxonic Diode (JFD) subject to the magnetic field, rf driving and dc biasing currents in the RCSJ model are reported. The dynamic behavior of this nonlinear device is mapped as a function of loss, bias, frequency and amplitude of rf excitation which leads to find sustainable fluxon oscillation regions in microwave application. As a result, chaos do...

Asymptotic states in long Josephson junctions in an external magnetic field.

Asymptotic states in long Josephson junctions are investigated in an external magnetic field. We show that a choice one of the solution of the stationary Ferrell-Prange equation can carry be out with use of an asymptotic solution of the sine-Gordon equation and that an evolution to that stable solution occurs by passing through metastable states, which is determined with a form of quickly dampe...

Hysteresis loop induced by rf radiation in Josephson junctions: an analytical approach

A collective coordinate approach is applied toanalyze the effect of an ifsignal on the radiation emitted from a long Josephson junction. This system shows a variety of interesting nonlinear phenomena including chaos and hysteresis. Consideringthe excited localized nonlinear oscillation as an effective breather mode, we derive a nonlinear equation for the collective variable of the breather and ...

Phase synchronization in an array of driven Josephson junctions.

We consider an array of N Josephson junctions connected in parallel and explore the condition for chaotic synchronization. It is found that the outer junctions can be synchronized while they remain uncorrelated to the inner ones when an external biasing is applied. The stability of the solution is found out for the outer junctions in the synchronization manifold. Symmetry considerations lead to...

Fluxon interaction with external rf radiation in Josephson junctions.