Satellite flux-flow steps in a long Josephson junction - art. no. 104504

Multifluxon dynamics in the presence of an external rf field is investigate d both analytically and numerically for a long one-dimensional Josephson ju nction. A simple model reported recently for the flux-flow mode is extended to the case when the external rf field is applied at the junction boundari es. It is shown that the interaction between the flux-flow mode and plasma waves induced by the external rf radiation results in additional (satellite ) steps in the I-V characteristic. According to a simple analytical formula , the satellite steps appear around the main flute-flow step and are separa ted by the voltage corresponding to the second harmonic of the external fre quency.