Suppression of broadband noise at mode locking in driven vortex matter

被引：50
作者：
Okuma, S.
Inoue, J.
Kokubo, N.
机构：
[1] Tokyo Inst Technol, Res Ctr Low Temperature Phys, Meguro Ku, Tokyo 1528551, Japan
[2] Kyushu Univ, Ctr Res & Advancement Higher Educ, Fukuoka 8100044, Japan
来源：
PHYSICAL REVIEW B | 2007年 / 76卷 / 17期
关键词：
D O I：
10.1103/PhysRevB.76.172503
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We measure voltage noise generated by current-driven vortices for fields corresponding to the solid phase when at equilibrium including the peak-effect regime, focusing on a change in broadband noise (BBN) as the vortex system undergoes a mode-locking (ML) resonance. For all the fields steplike structure indicative of ML is observed in the I-V curves. We find that BBN at high frequencies (but well below the ac drive frequency) is suppressed inside the ML steps. The results are consistent with the view that the mode-locked state is a frozen solid pinned in the moving frame of reference.
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页数：4
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