Numerical integration of the perturbed sine-Gordon equation describing a long overlap-geometry Josephson junction in a magnetic field indicates a branched structure of the first Fiske step. The major portion of the step corresponds to a simply periodic fluxon oscillation whereas the branches are characterized by subharmonic generation. Applied Physics Letters is copyrighted by The American Institute of Physics.
Bibliographical noteCopyright (1983) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Sørensen, M. P., Christiansen, P. L., Parmentier, R. D., & Skovgaard, O. (1983). Subharmonic generation in Josephson junction fluxon oscillators biased on Fiske steps. Applied Physics Letters, 42(8), 739-741. https://doi.org/10.1063/1.94045