Title :
Thermoelectric transfer difference of thermal converters measured with a Josephson source
Author :
Burroughs, Charles J., Jr. ; Benz, Samuel P. ; Hamilton, Clark A. ; Harvey, Todd E. ; Kinard, Joseph R. ; Lipe, Thomas E. ; Sasaki, Hitoshi
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
4/1/1999 12:00:00 AM
Abstract :
We have measured the thermoelectric transfer difference of two thermal voltage converters using a Josephson source and compared the results to similar measurements made with a conventional semiconductor source. Both sources use the fast reversed dc method. The Josephson source is an array of 16 384 superconductor-normal-superconductor Josephson junctions that is rapidly switched between voltage states of +0.5, 0, and -0.5 V. A marginally significant difference is detected between measurements with the two different sources
Keywords :
Josephson effect; convertors; measurement standards; measurement uncertainty; superconductor-normal-superconductor devices; voltage measurement; -0.5 to 0.5 V; Josephson source; fast reversed dc method; superconductor-normal-superconductor Josephson junctions; thermal converters; thermoelectric transfer difference; voltage states; Digital-analog conversion; Fluctuations; Josephson junctions; Measurement techniques; Metrology; NIST; Superconducting devices; Switches; Thermoelectricity; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
