Simulating the time-dependent Ginzburg-Landau equations for type-II superconductors by finite-difference method |
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引用本文: | 廖红印,周世平,施晓蕴.Simulating the time-dependent Ginzburg-Landau equations for type-II superconductors by finite-difference method[J].中国物理 B,2004,13(5):737-745. |
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作者姓名: | 廖红印 周世平 施晓蕴 |
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作者单位: | Department of Physics, Shanghai University, Shanghai 200436, China |
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基金项目: | Project supported by the National Natural Science Foundation of China (Grant No 60371033) and partly by Shanghai Leading Academic Discipline Program, China. |
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摘 要: | This article presents numerical solutions of the periodic time-dependent Ginzburg-Landau model for the type-II superconductors by a finite-difference approximation. Both the static and dynamical properties of a single vortex are studied as the external magnetic field varies. Vortex and anti-vortex can coexist and annihilate with time in the case of no external magnetic field, while the vortex will approach a steady state in the presence of magnetic field. We also study vortex dynamical behaviours while pinning centres exist in the sample and find that the pinning site, which has a significant potential to keep the vortex from moving, may trap the vortex.
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关 键 词: | II型超导体 有限差分理论 时间相关Ginzburg-Landau方程 涡流动力学 外磁场 |
收稿时间: | 9/7/2003 12:00:00 AM |
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