Title :
Low-frequency measurements of the quantized Hall resistance
Author :
Hartland, A. ; Kibble, B.P. ; Chua, S.W. ; Bohacek, J.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
Measurements of the quantised Hall resistance R/sub H/(i) for i=2 and 4 have been made over the frequency range 0.4-6.4 kHz using a modified ac bridge. The results have been corrected for cable effects and the frequency-dependence of the standard resistor R/sub s/. The measurements indicate that in addition to a linear frequency dependence f there is also a linear dependence on source-drain voltage V/sub SD/ such that: /spl Delta/R/sub H/(i)/R/sub s/=/spl alpha/[V/sub SD/+/spl nu/(i)]f where /spl alpha/(i) and /spl nu/(i) are constants.
Keywords :
electric resistance measurement; quantum Hall effect; 0.4 to 6.4 kHz; AC bridge; cable effects; frequency dependence; low-frequency measurement; quantized Hall resistance; source-drain voltage; standard resistor; Bridge circuits; Capacitors; Communication cables; Current measurement; Electrical resistance measurement; Frequency dependence; Frequency measurement; Measurement uncertainty; Resistors; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 1996 Conference on
Conference_Location :
Braunschweig, Germany
Print_ISBN :
0-7803-3376-4
DOI :
10.1109/CPEM.1996.546664
