Effect of nearby Pearl vortices upon the Ic versus B characteristics of planar Josephson junctions in thin and narrow superconducting strips
Effect of nearby Pearl vortices upon the Ic versus B characteristics of planar Josephson junctions in thin and narrow superconducting strips
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DOI：
10.1103/physrevb.84.134502
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发表时间：
2011-10-03
影响因子：
3.7
通讯作者：
Clem, John R.
中科院分区：
文献类型：
--
作者：
Clem, John R.
在本文中，我说明如何计算当垂直磁感应强度B作用于宽度W远小于珍珠长度λ = 2 λ（2）/d的长、薄超导带中的平面约瑟夫森结时，附近的珍珠涡旋或反涡旋对临界电流I-c（B）的影响，其中λ是伦敦穿透深度，d是厚度（d <λ）。的理论结果提供了一个定性的解释不寻常的功能，最近观察到的实验Golod等人。104，227003（2010）]。
In this paper I show how to calculate the effect of a nearby Pearl vortex or antivortex upon the critical current I-c(B) when a perpendicular magnetic induction B is applied to a planar Josephson junction in a long, thin, superconducting strip of width W much less than the Pearl length Lambda = 2 lambda(2)/d, where lambda is the London penetration depth and d is the thickness (d < lambda). The theoretical results provide a qualitative explanation of unusual features recently observed experimentally by Golod et al. [Phys. Rev. Lett. 104, 227003 (2010)] in a device with a similar geometry.