Potential imaging in quantum Hall devices by optical fiber based Pockels measurement

被引：4
作者：
Dohi, A. [1 ]
Yonamine, R. [1 ]
Oto, K. [1 ]
Muro, K. [1 ]
机构：
[1] Chiba Univ, Fac Sci, Dept Phys, Chiba 260, Japan
来源：
INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2007年 / 21卷 / 8-9期
关键词：
Quantum Hall effect; pockels effect; potential distribution;
D O I：
10.1142/S0217979207042926
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have developed an optical-fiber-based Hall potential imaging system using the Pockels effect in GaAs/AlGaAs two dimensional electron systems (2DES) in the quantum Hall regime to investigate current distributions. The mapping of the Hall potential shows the current concentration at the bulk region of 2DES samples, where the critical current depends on the channel width sub-linearly. We report in detail the experimental techniques of the imaging system operating in high magnetic fields.
引用
收藏
页码：1414 / 1418
页数：5
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