Fluxon density waves in long Josephson junctions
O. H. Olsen, A. V. Ustinov, N. F. Pedersen
DOI 10.1103/PhysRevB.48.13133 · Physical Review B
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Abstract
Numerical simulations of the multiple fluxon dynamics stimulated by an external oscillating force applied at a boundary of a long Josephson junction are presented. The calculated IV characteristics agree well with a recent experimental observation of rf-induced satellite flux-flow steps. The voltage spacing between the satellites and the main flux-flow step corresponds to the second harmonic of the external frequency. We find that the satellite flux-flow modes are characterized by collective excitations propagating through the fluxon chain. These dynamical states can be interpreted as fluxon density waves.
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