Chaotic Dynamics of a Josephson Junction with Nonlinear Damping

Chaotic Dynamics of a Josephson Junction with Nonlinear Damping

We study the chaotic dynamics of a Josephson junction with nonlinear damping. It is found that with the increasing dc bias the system undergoes a process from a biperiodical state to a chaotic one via a period-doubling route. Interestingly, when the value of the dc bias increases further, the number...

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Veröffentlicht in:Chinese physics letters 2010-05, Vol.27 (5), p.30-32
1. Verfasser: 李飞 潘长宁 张冬霞 唐利强
Format: Artikel
Sprache:eng
Schlagworte:
Bias
Chaos theory
Damping
Direct current
Josephson junctions
Nonlinear dynamics
Nonlinearity
Strategy
参数空间
控制策略
时间间隔
混沌动力学
混沌吸引子
直流偏置
约瑟夫森结
非线性阻尼
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description We study the chaotic dynamics of a Josephson junction with nonlinear damping. It is found that with the increasing dc bias the system undergoes a process from a biperiodical state to a chaotic one via a period-doubling route. Interestingly, when the value of the dc bias increases further, the number of the chaotic attractors also increases accordingly. These chaotic attractors appear one after another in different intervals and regions with time. Through a feedback controlling strategy the chaos can be effectively suppressed. We also find that the current between the two separated superconductors of the junction can increase or decrease monotonously with time in some parameter spaces.
doi_str_mv 10.1088/0256-307X/27/5/050501
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subjects Bias
Chaos theory
Damping
Direct current
Josephson junctions
Nonlinear dynamics
Nonlinearity
Strategy
参数空间
控制策略
时间间隔
混沌动力学
混沌吸引子
直流偏置
约瑟夫森结
非线性阻尼
title Chaotic Dynamics of a Josephson Junction with Nonlinear Damping
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