Abstract Using random pinning force simulations, we study numerically the alternating current (ac) response of the driven disordered vortex lattice. In the presence of a superimposed ac force, mode-locking steps are observed in the velocity－direct current (dc) force characteristics at high dc forces, where a smectic order occurs. The step width shows damped oscillations with the strength of interaction between vortices, in good agreement with recent experiments.
Received: 24 June 2003
Revised: 22 August 2003
Accepted manuscript online:
Fund: Project supported by the Ministry of Science and Technology of China (Grant No NKBRSF-G19990646), the Postdoctoral Science Foundation of China, and the Scientific Research Foundation of State Education Ministry for Returned Overseas Chinese Scholars.
Cite this article:
Wang You-Mei (汪友梅), Cao Yi-Gang (曹义刚), Jiao Zheng-Kuan (焦正宽) Mode-locking behaviour: ac response of a driven disordered vortex lattice 2004 Chinese Physics 13 538
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