中国物理B ›› 2000, Vol. 9 ›› Issue (1): 61-64.doi: 10.1088/1009-1963/9/1/012

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

NUMERICAL STUDIES ON THE DYNAMICS OF DISORDERED VORTEX LATTICE

曹义刚, 焦正宽   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • 收稿日期:1999-05-08 修回日期:1999-06-15 出版日期:2005-06-10 发布日期:2005-06-10
  • 基金资助:
    Project supported by the National Center of Research and Development on Superconductivity of China (Grant No. -A-5222).

NUMERICAL STUDIES ON THE DYNAMICS OF DISORDERED VORTEX LATTICE

Cao Yi-gang (曹义刚), Jiao Zheng-kuan (焦正宽)   

  1. Department of Physics, Zhejiang University, Hangzhou 310027, China
  • Received:1999-05-08 Revised:1999-06-15 Online:2005-06-10 Published:2005-06-10
  • Supported by:
    Project supported by the National Center of Research and Development on Superconductivity of China (Grant No. -A-5222).

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摘要： 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.

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.

中图分类号:  (Mechanical and acoustical properties, elasticity, and ultrasonic Attenuation)

  • 74.25.Ld
74.25.Op (Mixed states, critical fields, and surface sheaths)