INFLUENCE OF INDUCED MAGNETIC-FIELDS ON THE STATIC PROPERTIES OF JOSEPHSON-JUNCTION ARRAYS

被引:126
作者
PHILLIPS, JR
VANDERZANT, HSJ
WHITE, J
ORLANDO, TP
机构
[1] Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge
来源
PHYSICAL REVIEW B | 1993年 / 47卷 / 09期
关键词
D O I
10.1103/PhysRevB.47.5219
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The static properties of vortices in an array of Josephson junctions are shown to be significantly influenced by magnetic fields induced by the vortex currents. The energy barrier for vortex motion is enhanced, nearly doubling for penetration depths on the order of a cell size. Moreover, we find that correct calculation of the vortex current distribution, the magnetic moment, and the lower critical field require modeling mutual-inductance interactions between all cell pairs in the array. To make numerical simulation of the system feasible, an algorithm is derived that is sufficiently efficient to allow study of large (500 x 500 cells) arrays.
引用
收藏
页码:5219 / 5229
页数:11
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