Chaotic Dynamics of a Periodically Modulated Josephson Junction  

作　　者：吴琴 李飞 

机构地区：[1]School of Basic Medical Science, Guangdong Medical College, Dongguan 523808 [2]Department of Physics, Nanjing University, Nanjing 210008

出　　处：《Chinese Physics Letters》2007年第3期640-643,共4页中国物理快报（英文版）

摘　　要：We study the chaotic dynamics of a periodically modulated Josephson junction with damping. The general solution of the first-order perturbed equation is constructed by using the direct perturbation technique. It is theoretically found that the boundedness conditions of the general solution contain the Melnikov chaotic criterion. When the perturbation conditions cannot be satisfied, numerical simulations demonstrate that the system can step into chaos through a period doubling route with the increase of the amplitude of the modulating term. Regulating specific parameters can effectively suppress the chaos.We study the chaotic dynamics of a periodically modulated Josephson junction with damping. The general solution of the first-order perturbed equation is constructed by using the direct perturbation technique. It is theoretically found that the boundedness conditions of the general solution contain the Melnikov chaotic criterion. When the perturbation conditions cannot be satisfied, numerical simulations demonstrate that the system can step into chaos through a period doubling route with the increase of the amplitude of the modulating term. Regulating specific parameters can effectively suppress the chaos.

分 类 号：O45[理学—无线电物理]