Measurement of thermoelectric effects in a thermal converter using a NbN/TiN/NbN Josephson junction array

Author

Sasaki, Hitoshi ; Yamamori, Hirotake ; Fujiki, Hiroyuki ; Takahashi, Kunihiko ; Shoji, Akira

Author_Institution

Nat. Inst. of Adv. Ind. Sci. & Technol., Ibaraki, Japan

Volume

52

Issue

2

fYear

2003

fDate

4/1/2003 12:00:00 AM

Firstpage

359

Lastpage

362

Abstract

The AC-DC transfer difference due to thermoelectric effects in a thermal converter was evaluated using a NbN/TiN/NbN Josephson junction array as an ultra-stable fast-reversed DC (FRDC) source. The Josephson junction array was connected in parallel with a conventional semiconductor FRDC current source, as an "add-on" voltage-stabilizer for the input of the thermal converter. The AC-DC difference due to thermoelectric effects was evaluated with a standard measurement (type-A) uncertainty of the order of 0.01 μV/V, four-times better than that with the conventional semiconductor FRDC source.

Keywords

AC-DC power convertors; niobium compounds; superconductor-insulator-superconductor devices; thermoelectric conversion; thermoelectric devices; thermoelectricity; titanium compounds; transfer standards; type II superconductors; voltage measurement; voltage regulators; AC-DC transfer difference; NbN-TiN-NbN; NbN/TiN/NbN Josephson junction array; add-on voltage-stabilizer; parallel semiconductor FRDC current source; thermal converter; thermoelectric effects measurement; type-A standard measurement uncertainty; ultra-stable fast-reversed DC source; Analog-digital conversion; Josephson junctions; Measurement standards; Microwave antenna arrays; Microwave frequencies; NIST; Niobium; Thermoelectricity; Tin; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2003.810720

Filename

1202047