Fast reversed DC measurements on thermal converters using a SINIS Josephson junction array

Author

Funck, Torsten ; Behr, Ralf ; Klonz, Manfred

Author_Institution

Phys. Tech. Bundesanstalt, Braunschweig, Germany

Volume

50

Issue

2

fYear

2001

fDate

4/1/2001 12:00:00 AM

Firstpage

322

Lastpage

325

Abstract

An array of 7492 SINIS Josephson junctions was used to generate fast reversed dc (FRDC) voltages of approximately 1.1 V for the study of thermoelectric effects in planar multijunction thermal converters (PMJTCs). A bias current source for fast reversal with a frequency of up to 10 kHz has been designed. For the first time, results of Josephson measurements on two different PMJTCs excellently agree with the results obtained using a semiconductor FRDC source within 0.06 μV/V up to 200 Hz. At higher frequencies, a systematic slope in the relative FRDC-DC voltage transfer difference versus the reversing frequency of about 10 ^-7/kHz has been observed, which could not be measured with the semiconductor source. This slope is probably caused by the rf-filters required in the cryoprobe

Keywords

superconducting arrays; superconducting junction devices; superconductor-insulator-superconductor devices; thermoelectricity; transfer standards; 1.1 V; Josephson measurements; SINIS Josephson junction array; bias current source; cryoprobe; planar multijunction thermal converters; reversed DC measurements; rf-filters; thermoelectric effects; voltage transfer difference; Capacitance measurement; Electrical resistance measurement; Frequency measurement; Josephson junctions; Resistance heating; Signal generators; Superconducting devices; Thermoelectricity; Time measurement; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.918132

Filename

918132