AC measurements of the minimum longitudinal resistance of a QHE sample from 10 Hz to 10 kHz

Author

Piquemal, François P M ; Trapon, Gérard R. ; Genevès, Gérard P J

Author_Institution

Lab. Central des Ind. Electriques, Fontenay aux Roses, France

Volume

45

Issue

6

fYear

1996

fDate

12/1/1996 12:00:00 AM

Firstpage

918

Lastpage

922

Abstract

AC measurements of the longitudinal resistance, R_xx, of a quantum Hall effect (QHE) sample have been made in a frequency range from 10 Hz to 10 kHz. The results show no frequency effect on the minimum value of R_xx corresponding to the quantum numbers i=2 and i=4, within the measurement resolution of 0.5 mΩ. Therefore, the influence of frequency on the value of the quantized Hall resistance, R_H, should not exceed a few parts in 10⁹. Some unwanted effects detected during the development of the resistance bridge have been pointed out

Keywords

III-V semiconductors; electric resistance measurement; gallium arsenide; measurement standards; quantum Hall effect; 10 Hz to 10 kHz; AC measurement; GaAs; QHE sample; frequency effect; longitudinal resistance; quantized Hall resistance; quantum Hall effect; resistance bridge; Bridge circuits; Electric breakdown; Electrical resistance measurement; Frequency measurement; Gallium arsenide; Hall effect; Probes; Quantization; Quantum capacitance; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.543986

Filename

543986