Analysis Theory of Asymmetric dc SQUID Driven by Thermal Noises  

作　　者：LǖHai-Feng JIAYa HUANGXin-Tang 

机构地区：[1]DepartmentofPhysics,CentralChinaNormalUniversity,Wuhan430079,China

出　　处：《Communications in Theoretical Physics》2004年第5期707-714,共8页理论物理通讯（英文版）

基　　金：教育部霍英东教育基金，国家自然科学基金

摘　　要：An analysis expression for the stationary probability distribution of asymmetric superconducting quantum interference device with two Josephson junctions (dc SQUID) driven by thermal noise is derived from two-dimensional Fokker-Planck equation, where the potential condition is satisfied. Two of the three asymmetric parameters, inductance asymmetric parameter η and critical current asymmetric parameter α, can be changed in this condition, but resistance asymmetric parameter ρ cannot be changed. The 'ripple' phenomenon of circulating current can disappear with the change of coefficient α. The effects of asymmetric parameters on current-voltage relationship and transfer function of dc SQUID system are also represented.

关 键 词：noise Fkker-Planck equation superconducting quantum interference device 

分 类 号：TN201[电子电信—物理电子学]