| INFLUENCE OF PINNING CENTER DISTRIBUTION ON THE PINNING OF TWO-DIMENSIONAL VORTEX SYSTEM |
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| 作者姓名： | 罗孟波 汪壮兵 焦正宽 |
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| 作者单位： | Dept. of physics，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | ProjectsupportedbytheMinistryofScienceandTechnologyofChina (NKBRSF -G19990 64 6)andZhejiangProvinceFoundation (1990 3 1) |
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| 摘 要： | ＩＮＴＲＯＤＵＣＴＩＯＮＴｈｅｐｈｙｓｉｃｓｏｆａｖｏｒｔｅｘｌａｔｔｉｃｅ (ＶＬ)ｉｎｔｙｐｅ ＩＩｓｕｐｅｒｃｏｎｄｕｃｔｏｒｓｈａｓｂｅｅｎｔｈｅｆｏｃｕｓｏｆｉｎｔｅｒｅｓｔｓｉｎｃｅｔｈｅｂｅｇｉｎｎｉｎｇｏｆｈｉｇｈ Ｔｃ ｒｅｓｅａｒｃｈ .Ｉｔｉｓｗｅｌｌ ｋｎｏｗｎｔｈａｔ,ａｆｔｅｒｔｈｅｅｘｔｅｒｎａｌｍａｇｎｅｔｉｃｆｉｅｌｄｅｘｃｅｅｄｓｉｔｓｃｒｉｔｉｃａｌｖａｌｕｅＨｃ1 ,ｔｈｅｍａｇｎｅｔｉｃｆｉｅｌｄｃａｎｐｅｎｅｔｒａｔｅａｔｙｐｅ ＩＩｓｕｐｅｒｃｏｎｄｕｃｔｏｒｉｎ…
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INFLUENCE OF PINNING CENTER DISTRIBUTION ON THE PINNING OF TWO-DIMENSIONAL VORTEX SYSTEM |
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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,2001(1). |
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| Authors: | LUO Meng-bo WANG Zhuang-bing JIAO Zheng-kuan |
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| Abstract: | The superconductor sample had periodic distribution of pinned region (with length of \$L\-p\$) and unpinned region (with length of \$L-L\-p\$) 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 \$F\-c\$, beyond which the vortex system begins to depin, increases with increase of \$L\-p\$, indicating that the homogeneity of pinning centers helps to enhance the critical electric current of a superconductor. We found that the critical depinning force \$F\-c\$ depends logarithmically on \$L/L\-p\$. |
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| Keywords: | superconductor vortex lattice pinning critical force |
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