Vortex charge in mesoscopic superconductors
Vortex charge in mesoscopic superconductors
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DOI：
10.1103/physrevb.64.144511
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发表时间：
2000-11
影响因子：
3.7
通讯作者：
S. V. Yampolskii;B. Baelus;F. Peeters;J. Koláček
中科院分区：
文献类型：
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作者：
S. V. Yampolskii;B. Baelus;F. Peeters;J. Koláček
具有圆对称性的介观超导体中的电荷密度，磁盘和圆柱体，研究内的现象学金兹伯格-朗道的方法。我们发现，即使在迈斯纳态下，样品中也存在电荷重新分布，使样品边缘带负电。在涡旋状态下，这种迈斯纳电荷和涡旋电荷之间存在竞争，这可能会随着磁场的增加而改变样品边缘处电荷的极性。分析表明，尽管电荷重新分配的介观样品作为一个整体保持电中性。
The electric charge density in mesoscopic superconductors with circular symmetry, i.e., disks and cylinders, is studied within the phenomenological Ginzburg-Landau approach. We found that even in the Meissner state there is a charge redistribution in the sample which makes the sample edge become negatively charged. In the vortex state there is a competition between this Meissner charge and the vortex charge which may change the polarity of the charge at the sample edge with increasing magnetic field. It is shown analytically that in spite of the charge redistribution the mesoscopic sample as a whole remains electrically neutral.