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Discrete breathers in dc biased Josephson-junction arrays

J. J. Mazo·E. Trias·T. P. Orlando
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Abstract

We propose a method to excite and detect a rotor localized mode (rotobreather) in a Josephson-junction array biased by dc currents. In our numerical studies of the dynamics we have used experimentally realizable parameters and included self-inductances. We have uncovered two families of rotobreathers. Both types are stable under thermal fluctuations and exist for a broad range of array parameters and sizes including arrays as small as a single plaquette. We suggest a single Josephson-junction plaquette as an ideal system to experimentally investigate these solutions.

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J. J. Mazo, E. Trias, T. P. Orlando. 1999-04-12. Discrete breathers in dc biased Josephson-junction arrays. https://doi.org/10.1103/physrevb.59.13604

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