Discrete breathers in dc biased Josephson-junction arrays

Details Discrete breathers in dc biased Josephson-junction arrays Discrete breathers in dc biased Josephson-junction arrays

1999-04-12

arxiv.org/abs/cond-mat/9904165v1

Physics

Condensed Matter

Superconductivity

5 pages, 5 figure, to appear June 1, 1999 in PRB

Scientific paper

10.1103/PhysRevB.59.13604

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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