约瑟夫森结不同模型的混沌行为仿真  

Simulation of Chaos in Different Models of Josephson Junctions

作　　者：周铁戈[1] 王定城[1] 刘飞连[1] 方兰[1] 赵新杰[1] 阎少林[1] 

机构地区：[1]南开大学电子系,天津300071

出　　处：《系统仿真学报》2010年第3期666-669,共4页Journal of System Simulation

基　　金：教育部博士点基金项目(200800551009);国家科委"973"项目(2006CB601006);"863"项目(2006AA03Z213)

摘　　要：约瑟夫森结的混沌行为具有重要的研究和应用价值,根据其动力学特性,提出了约瑟夫森结混沌行为在通用软件Pspice中的仿真模型,为深入系统研究约瑟夫森结混沌行为提供了新的方法。其中包括射频驱动的RCSJ模型、考虑隧道效应的RCSJ模型和RCLSJ模型。利用模型进行仿真研究得出了三种模型的时域波形、频谱、对初值的敏感依赖关系等混沌特性,不但证实了模型的正确性和实用性,而且得到了考虑隧道效应的RCSJ模型混沌行为的规律。Chaotic behaviors of Josephson junctions are of great value in research and applications. According to Josephson junction dynamics, we put forward the chaotic behavior simulation of different models of Josephson junctions. Then a new method for the research of Josephson junction chaos is presented. There are three kinds of simulation models of Josephson junctions, RCSJ model driven by rf current, RCSJ model with tunnel effect and RCLSJ model. Taking advantage of the models, chaotic properties of Josephson junctions are simulated, including the time-domain properties, frequency-domain properties and the sensitivity to initial conditions. The results prove the models are correct and applied in the chaos research easily. Also the results give the difference of chaotic behavior between the RCSJ model and the RCSJ model with tunnel effect.

关 键 词：约瑟夫森结 混沌行为 RCSJ模型 RCLSJ模型 

分 类 号：TM26[一般工业技术—材料科学与工程] TN103[电气工程—电工理论与新技术]