交流驱动的二维约瑟夫森结阵列的摇摆整流效应  

Rocking rathcet in two-dimensional Josephson networks driven by AC current

作　　者：马志斌[1] 祁飞[1] 刘焕[1] 陈庆虎[1,2] 

机构地区：[1]浙江师范大学数理与信息工程学院,浙江金华321004 [2]浙江大学物理系,浙江杭州310027

出　　处：《浙江师范大学学报（自然科学版）》2015年第4期387-391,共5页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(11174254);浙江省自然科学基金资助项目(Z7080203)

摘　　要：对2种非对称钉扎势的二维约瑟夫森结阵列在交流驱动下的涡旋-反涡旋的定向运动进行了研究,发现整流电压显著地依赖于涡旋密度和交变电流的幅值,表现出非单调行为.基于模拟的涡旋结构、涡旋反涡旋对的出现,很好地解释了所获得直流电压与交变电流振幅的特征关系.The directed motion of vortices and antivortices driven by AC currents in the two-dimensional Josephson junction arrays with two kinds of asymmetric pinning potential were studied numerically. It was found that the rectifying voltage showed non-monotonic behavior and strongly depended on the vortex density and the amplitude of the AC currents. Based on the simulated vortex structures and appearance of vortex-antivortex pairs,the observed characteristics of DC voltage and the amplitude of the AC currents were explained in detail.

关 键 词：Josephson结阵列 钉扎 超导涡旋 棘轮效应 

分 类 号：O511.1[理学—低温物理]