Mode locking of vortex matter in the peak effect regime of amorphous MoGe films

被引：2
|
作者：
Kokubo, N.
Kadowaki, K.
Kes, P. H.
机构：
[1] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[2] Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RA Leiden, Netherlands
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2006年 / 445卷 / 206-209期
关键词：
peak effect; mode locking; amorphous MoGe;
D O I：
10.1016/j.physc.2006.03.114
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have investigated flow properties of vortex matter in the peak effect regime of amorphous MoGe films by a mode locking (ML) technique. While dc current-voltage (I-V) characteristic exhibits a S-shaped anomaly, we observed striking frequency dependence in a ML feature: above a minimum frequency to observe the ML resonance, the maximized ML width increases with frequency and seems to saturate at high frequency. A comparison indicates that the I-V anomaly does not coincide with the onset of ML, but occurs in. a velocity range where fractions of mode locked vortices increase rapidly with velocity. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：206 / 209
页数：4
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