Abstract Numerical study of the influence of the distribution of pinning centres on the dynamics of a two-dimensional vortex system is performed. The superconductor sample has a periodic structure with a pinned region of length Lp and an unpinned region of length Lx-Lp along the direction of driving force (Lorentz force). Results show that, at zero temperature, the critical force Fc increases with the increase of Lp, indicating that the homogeneity of pinning centres helps to enhance the critical electric current of the superconductor. At large driving forces, vortex static channels form in the pinned region even for Lp <Lx.
Received: 13 October 2000
Accepted manuscript online:
Fund: Project supported by the Ministry of Science and Technology of China (NKBRSF-G19990646) and the Provincial Scientific Foundation of Zhejiang, China (199031).
Cite this article:
Luo Meng-bo (罗孟波), Jiao Zheng-kuan (焦正宽), Ren Qing-bao (任清褒), Chen Qing-hu (陈庆虎) INFLUENCE OF PINNING CENTRE DISTRIBUTION ON THE DYNAMICS OF TWO-DIMENSIONAL VORTEX SYSTEM 2001 Chinese Physics 10 229
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