Experimental evidence for giant vortex states in a mesoscopic superconducting disk
Experimental evidence for giant vortex states in a mesoscopic superconducting disk
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DOI：
10.1103/physrevlett.93.257002
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发表时间：
2004-12-17
影响因子：
8.6
通讯作者：
Ootuka, Y
中科院分区：
文献类型：
--
作者：
Kanda, A;Baelus, BJ;Ootuka, Y
本文用多小隧道结方法研究了介观超导圆盘对垂直磁场的响应，同时测量了圆盘上多个小隧道结的输运性质。这使我们能够在实验上首次区分巨涡旋态和多涡旋态。此外，我们在实验上发现了磁场诱导的涡旋重排和组合。基于非线性Ginzburg-Landau理论的数值计算结果与实验结果吻合较好。
The response of a mesoscopic superconducting disk to perpendicular magnetic fields is studied by using the multiple-small-tunnel-junction method, in which transport properties of several small tunnel junctions attached to the disk are measured simultaneously. This allows us to make the first experimental distinction between the giant vortex states and multivortex states. Moreover, we experimentally find a magnetic-field induced rearrangement and combination of vortices. The experimental results are well reproduced in numerical results based on the nonlinear Ginzburg-Landau theory.