电阻并联约瑟夫森结阵列中的混沌行为  

Chaotic behavior of the Josephson junction array shunted by a common resistor

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

机构地区：[1]南开大学信息技术科学学院,天津300071

出　　处：《低温与超导》2009年第2期21-24,共4页Cryogenics and Superconductivity

基　　金：国家"863"计划项目(2006AA03Z213);博士点基金(200800551009)支持

摘　　要：采用数值方法,对存在并联电阻的约瑟夫森结串联阵列进行了研究。首次发现当阵列中结的个数为3时,其中存在明显的混沌行为,并给出了存在混沌行为的参数范围。根据A.A.Chernikov和G.Schmidt的理论,只有当约瑟夫森结的个数大于或者等于4时才能观察到混沌行为;这一发现说明了其理论存在一定的局限性。By numerical simulations, we investigated the dynamic behaviors of the series Joscphson junction array shunted by a common resistor. For the first time, chaotic behaviors were found when there were three junctions with slight parameter range in the array. The parameter range where chaos existed was also presented. According to the theory of A. A. Chernikov and G. Schmidt, when there were four or more junctions in the array, the system should exhibit chaotic behavior. The results indicate that the theory of A. A. Chernikov and G. Schmidt is not exactly appropriate.

关 键 词：约瑟夫森结 阵列 混沌行为 

分 类 号：O511[理学—低温物理] TN624[理学—物理]