Internal dynamics of long Josephson junction oscillators

This is the authors' abstract. We don't add key points for this paper.

Numerical computations on a sine-Gordon model of the Josephson junction fluxon oscillator are compared with experimental measurements. Good agreement is found for the voltage current characteristic, oscillator power output, and range of current bias over which oscillation is observed. Our numerical results imply a ’’bunched-fluxon’’ mode of oscillation at larger values of bias current.