Mode locking in ac-driven vortex lattices with random pinning

被引：79
|
作者：
Kolton, AB [1 ]
Domínguez, D
Gronbech-Jensen, N
机构：
[1] Ctr Atom Bariloche, RA-8400 Bariloche, Rio Negro, Argentina
[2] Univ Calif Davis, Dept Appl Sci, Davis, CA 95616 USA
[3] Univ Calif Berkeley, Lawrence Berkeley Lab, NERSC, Berkeley, CA 94720 USA
来源：
PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.86.4112
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We find mode-locking steps in simulated current-voltage characteristics of ac-driven vortex lattices with random pinning. For low frequencies there is mode locking above a finite ac force amplitude, while for large frequencies there is mode locking for any small ac force. This is correlated with the nature of temporal order in the different regimes in the absence of ac drive. The mode-locked state is a frozen solid pinned in the moving reference of frame, and the depinning from the step shows plastic flow and hysteresis.
引用
收藏
页码：4112 / 4115
页数：4
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