Upscaling DC resistance using a Josephson junction array

Author

Kohlmann, Johannes ; Gutmann, Peter ; Niemeyer, Jurgen

Author_Institution

Phys.-Tech. Bundesanstalt, Braunschweig, Germany

Volume

41

Issue

4

fYear

1992

fDate

8/1/1992 12:00:00 AM

Firstpage

548

Lastpage

551

Abstract

A ratio standard for DC resistance measurements in the range above about 10 kΩ using a three-terminal Josephson junction series array is described. Resistance ratios of two-terminal resistors from 1:1 to at least 1:10 are examined with a single device utilizing the voltage steps of the Josephson array as voltage sources of a potentiometer bridge configuration. Some features of the circuit are discussed. The system promises systematic ratio errors below 10^-8 and uncertainties which depend only on the quality of the resistors. Preliminary measurements with a prototype instrument show a relative reproducibility of 1×10^-7, limited by the noise of a commercial digital multimeter used as a detector

Keywords

Josephson effect; bridge instruments; electric resistance measurement; electric sensing devices; superconducting junction devices; DC resistance measurements; digital multimeter; measurement errors; noise; potentiometer bridge; prototype instrument; ratio standard; reproducibility; three-terminal Josephson junction series array; two-terminal resistors; voltage sources; voltage steps; Bridge circuits; Electrical resistance measurement; Instruments; Josephson junctions; Measurement standards; Noise measurement; Potentiometers; Prototypes; Resistors; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.155923

Filename

155923