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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2001, Vol. 2 Issue (1): 24-27    DOI: 10.1631/jzus.2001.0024
Science & Engineering     
INFLUENCE OF PINNING CENTER DISTRIBUTION ON THE PINNING OF TWO-DIMENSIONAL VORTEX SYSTEM
LUO Meng-bo, WANG Zhuang-bing, JIAO Zheng-kuan
Dept.of physics,Zhejiang University,Hangzhou 310027,China
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Abstract  The superconductor sample had periodic distribution of pinned region (with length of Lp) and unpinned region (with length of L−Lp) along the driving force direction. Numerical study on the influence of the distribution of pinning centers on pinning of the two-dimensional vortex system showed that the critical depinning force Fc, beyond which the vortex system begins to depin,increases with increase of Lp, indicating that the homogeneity of pinning centers helps to enhance the critical electric current of a superconductor. We found that the critical depinning force Fc depends logarithmically on L/Lp.

Key words： superconductor,vortex lattice,pinning,critical force     
Received: 08 May 2000     
CLC:  O511  
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WANG Zhuang-bing
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JIAO Zheng-kuan
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LUO Meng-bo, WANG Zhuang-bing, JIAO Zheng-kuan. INFLUENCE OF PINNING CENTER DISTRIBUTION ON THE PINNING OF TWO-DIMENSIONAL VORTEX SYSTEM. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2001, 2(1): 24-27.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.2001.0024     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2001/V2/I1/24

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