Offset reduction in Hall effect measurements using a nonswitching van der Pauw technique

被引:2
|
作者
Riss, O. [1 ]
Shaked, E. [1 ]
Karpovsky, M. [1 ]
Gerber, A. [1 ]
机构
[1] Tel Aviv Univ, Raymond & Beverly Sackler Sch Phys & Astron, IL-69978 Tel Aviv, Israel
来源
REVIEW OF SCIENTIFIC INSTRUMENTS | 2008年 / 79卷 / 07期
基金
以色列科学基金会;
关键词
D O I
10.1063/1.2949826
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A nonswitching van der Pauw technique, which uses two electrically isolated alternating current sources operating at two different frequencies and two lock-in amplifiers, is suggested for Hall effect measurements. Parasitic offset voltage, typical for this type of measurements, is reduced by averaging two sets of data accumulated simultaneously. Application of the technique is particularly useful when the offset changes on a time scale comparable to the measurement cycle. (C) 2008 American Institute of Physics.
引用
收藏
页数:3
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