Title :
Measurements of the AC longitudinal resistance of a GaAs-AlGaAs quantum Hall device
Author :
Cabiati, F. ; Callegaro, L. ; Cassiago, C. ; D´Elia, V. ; Marullo Reedtz, G.
Author_Institution :
Ist. Elettrotecnico Nazionale Galileo Ferraris, Torino, Italy
Abstract :
Measurements of the AC longitudinal resistance R/sub x/ of a quantum Hall device have been carried out at frequencies from 160 Hz to 16 kHz, with an improved measuring system and a new procedure for rejecting the quadrature component due to stray capacitance. The results show a linear dependence on frequency and an asymmetric shape of the R/sub x/ minimum versus magnetic induction.
Keywords :
III-V semiconductors; aluminium compounds; electric resistance measurement; gallium arsenide; measurement standards; quantum Hall effect; semiconductor superlattices; 160 Hz to 16 kHz; AC longitudinal resistance measurement; AC resistance standard; GaAs-AlGaAs; active guard; asymmetric shape; improved measuring system; linear frequency dependence; phase alignment; quadrature component rejection; quantum Hall device; stray capacitance; Capacitance measurement; Coaxial cables; Conductors; Current measurement; Detectors; Electrical resistance measurement; Performance evaluation; Phase measurement; Quantum capacitance; Voltage measurement;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1998 Conference on
Conference_Location :
Washington, DC, USA
Print_ISBN :
0-7803-5018-9
DOI :
10.1109/CPEM.1998.700012
