Title :
A resistance ratio bridge based on a cryogenic current comparator for measuring the quantized Hall resistance
Author :
Van Der Wel, W. ; Mooij, J.E. ; Harmans, C.J.P.M. ; Andre, Jean-pierre ; Weimann, G. ; Ploog, Klaus ; Foxon, C. Thomas ; Harris, Jeffrey J.
Author_Institution :
Dept. of Appl. Phys., Delft Univ., Netherlands
fDate :
2/1/1989 12:00:00 AM
Abstract :
A description is given of a resistance bridge based on a cryogenic current comparator covering a range of 1-12 906 Ω. Type-B (`systematic´) uncertainty contributions are carefully evaluated and are less than 0.004 p.p.m. (1σ). Type-A or random contributions are 0.006 p.p.m. (σ, 20 min.) in a transfer of the quantized Hall resistance RH (i=2) to 100 Ω. Measurements relating h/2e2 to ΩVSI maintained by the Van Swinden Laboratory are presented, showing agreement to 0.09 p.p.m. with the results of other national standards institutes
Keywords :
bridge instruments; comparators (circuits); electric resistance measurement; low-temperature techniques; measurement standards; quantum Hall effect; 1 to 12906 ohm; Van Swinden Laboratory; cryogenic current comparator; h/2e2; national standards institutes; quantized Hall resistance; resistance ratio bridge; Bridges; Circuits; Cryogenics; Current measurement; Density estimation robust algorithm; Electrical resistance measurement; Laboratories; Optical filters; Q measurement; Resistors;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
