超导Josephson结的动力学行为

DYNAMICD BEH AVIOR OF SUPERCONDUCTOR JUSEPHSON JUNCTION

本文分析一类 Josephson 结电路模型,使用积分流形对 Josephson 结的复杂动力学行为(DC受迫)进行研究,解释了一些物理现象。积分流形的引入,将 Josephson 结电路静态行为降低至在环面上的动力学行为,提供了一种研究动力学问题的新方法。对交流情形或射频驱动,采用 Melnikov 方法,得出系统存在混沌运动的参数范围。

Using a second-order circuit model the camplex dynnmical behavior of a typical Josephson junction circuit(DC driven)is regorously analysed using integral manifolds.lnterpretate some physcal phenmena,and through the analying of inteyrol mani- folds.The Steady-state behavior of the Josephson junction circuit reduces to analysis of its dynamics on a torus.A New method of Studying dynamics was previded.For AC driven,we used Melnikov’s method,got some rang of parameter in this syetem.