Stability of vortex states in mesoscopic superconducting squares with artificial pinning

被引：1
|
作者：
Furugen, R.
Hatsumi, S.
Ootuka, Y.
Kanda, A. [1 ]
机构：
[1] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058571, Japan
来源：
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2008年 / 468卷 / 15-20期
关键词：
mesoscopic superconductivity; vortex pinning; fluxoid state transitions;
D O I：
10.1016/j.physc.2008.05.214
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We experimentally study the stability of the vortex states in mesoscopic superconducting squares with zero, three and four submicron artificial pinning centers (antidots) by measuring the width of the magnetic field region over which a particular superconducting state with vorticity L is stabilized. The transitions between different vortex states are detected by the voltage change across current-biased small tunnel junctions attached to the square. The vortex states (L not equal 0) are significantly stabilized by the existence of antidots. We discuss the effect of the number of antidots on the stability of mesoscopic vortex states. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：1301 / 1304
页数：4
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