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Journal of Zhejiang University SCIENCE A 2001 Vol.2 No.1 P.24-27

http://doi.org/10.1631/jzus.2001.0024


INFLUENCE OF PINNING CENTER DISTRIBUTION ON THE PINNING OF TWO-DIMENSIONAL VORTEX SYSTEM


Author(s):  LUO Meng-bo, WANG Zhuang-bing, JIAO Zheng-kuan

Affiliation(s):  Dept.of physics,Zhejiang University,Hangzhou 310027,China

Corresponding email(s):   mbluo@mail.hz.zj.cn

Key Words:  superconductor, vortex lattice, pinning, critical force


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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[J]. Journal of Zhejiang University Science A, 2001, 2(1): 24-27.

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A1 - LUO Meng-bo
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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.

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Reference

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