Stability of bunched fluxons in magnetically coupled Josephson junctions
Niels Gro/nbech-Jensen, David Cai, Mogens R. Samuelsen
DOI 10.1103/PhysRevB.48.16160 · Physical Review B
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Abstract
The stability of bunched fluxon states in inductively coupled Josephson junctions is analyzed for fluxons of both equal and opposite polarity. We demonstrate that unipolar fluxons may form stable bunched states if the velocity is above a given threshold. The stability of these bunched states is based on the existence of two characteristic velocities in the coupled system. The result of analytical stability analysis is in excellent agreement with the results of numerical simulations.
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