| 用两带Ginzburg-Landau理论分析两带超导体Lu2Fe3Si5的表面临界磁场 |
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| 引用本文： | 刘敏霞. 用两带Ginzburg-Landau理论分析两带超导体Lu2Fe3Si5的表面临界磁场[J]. 物理学报, 2011, 60(1): 17401-017401 |
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| 作者姓名： | 刘敏霞 |
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| 作者单位： | 东莞理工学院电子工程系,东莞 523808 |
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| 基金项目： | 国家自然科学基金(批准号:11047150),东莞市高等院校科技计划项目(批准号:2008108101003)资助的课题. |
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| 摘 要： | 用两带Ginzburg-Landau(GL)理论分析了Lu2Fe3Si5的表面临界磁场,当超导体的表面与任一主晶面重合,且外磁场平行于超导体的表面时,比值Hc3/Hc2(HC2是Lu2Fe3Si5的上临界磁场)强烈依赖于温度. 当超导体的表面是bc平面,且关键词：两带超导体GL理论2Fe3Si5')" href="#">Lu2Fe3Si5表面临界磁场
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| 关 键 词： | 两带超导体 GL理论 Lu2Fe3Si5 表面临界磁场 |
| 收稿时间： | 2009-04-07 |
The two-band Ginzburg-Landau theory analysis of the surface critical field of the two-band superconductor Lu2 Fe3 Si5 |
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| Liu Min-Xia. The two-band Ginzburg-Landau theory analysis of the surface critical field of the two-band superconductor Lu2 Fe3 Si5[J]. Acta Physica Sinica, 2011, 60(1): 17401-017401 |
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| Authors: | Liu Min-Xia |
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| Affiliation: | Department of Electronic Engineering, Dongguan University Technology, Dongguan 523808, China |
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| Abstract: | Two-band Ginzburg-Landau (GL) theory is adopted to analyze the surface critical field Hc3 of Lu2Fe3Si5 . When the surface of a superconductor coincides with any of crystallographic planes and is parallel to the external magnetic field H, the ratio Hc3/Hc2 (where Hc2 is the upper critical field of Lu2Fe3Si5) is strongly dependent on temperature. When the surface of a superconductor coincides with the bc plane and is parallel to H, the ratio depends not only on temperature, but also on the angle between the c axis and H. However, the ratio is constant for single-band superconductors. |
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| Keywords: | two-band superconductors GL theory Lu2Fe3Si5 surface critical field |
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