Asymmetrical solutions and role of thermal fluctuations in dc current driven extended Josephson junction

Details Asymmetrical solutions and role of thermal fluctuations in dc current driven extended Josephson junction Asymmetrical solutions and role of thermal fluctuations in dc current driven extended Josephson junction

2012-04-03

arxiv.org/abs/1204.0610v1

Physics

Condensed Matter

Superconductivity

5 pages, 6 figures

Scientific paper

Extended Josephson junction driven by dc bias current is studied numerically. Two types of solutions, symmetrical and asymmetrical, are found. The current-voltage characteristic (IVC) is calculated. The symmetrical solutions form main histeretic IVC and asymmetrical one create an additional branch. Depending on the bias current value periodic, quasiperiodic and chaotic modes of the junction motion was observed. Dynamics of the junction affected by thermal fluctuations was analyzed. Stability of different states of the junction is discussed.

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