NUMERICAL STUDIES ON THE DYNAMICS OF DISORDERED VORTEX LATTICE |
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Authors: | Cao Yi-gang and Jiao Zheng-kuan |
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Institution: | Department of Physics, Zhejiang University, Hangzhou 310027, China |
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Abstract: | Flow behavior of the driven two-dimensional vortex lattice is numerically studied with different densities of randomly distributed pointlike pinning centers. Different features in the curves of velocity-force dependence are found between the elastic and plastic regimes. Scaling fit between force and velocity above the critical driving force can be obtained in the elastic regime but fails in the plastic regime. Transition from the lastic to plastic regimes is accompanied by maximum peaks in the differential curves of velocity-force dependence in the disordered vortex lattice. |
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