Josephson series arrays with NbSi barrier for ac voltage standards

Author

Kohlmann, J. ; MuÌˆller, F. ; Kieler, Oliver ; Scheller, T. ; Egeling, B. ; Wendisch, R. ; Behr, R.

Author_Institution

Phys.-Tech. Bundesanstalt (PTB), Braunschweig, Germany

fYear

2014

fDate

24-29 Aug. 2014

Firstpage

466

Lastpage

467

Abstract

The overdamped Josephson junctions for ac voltage standards are realized with Nb_xSi_1-x barriers at PTB. The characteristic parameters of the junctions can be tuned by the Nb content and the thickness over a wide range from 10 GHz to 70 GHz. The junctions are used for binary-divided 10 V arrays containing nearly 70,000 junctions and for pulse-driven arrays enabling the synthesis of pure arbitrary waveforms.

Keywords

measurement standards; niobium compounds; superconducting arrays; superconducting junction devices; voltage measurement; waveform analysis; AC voltage standard; Josephson series arrays; NbSi; PTB; arbitrary waveform synthesis; frequency 10 GHz to 70 GHz; junction parameter tuning; overdamped Josephson junction; pulse driven array; voltage 10 V; Frequency synthesizers; Harmonic analysis; Josephson junctions; Junctions; Niobium; Silicon; Standards; AC Josephson voltage standards; NbSi barrier Josephson junctions; SNS Josephson junctions; binary-divided Josephson series arrays; pulse-driven Josephson series arrays;

fLanguage

English

Publisher

ieee

Conference_Titel

Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on

Conference_Location

Rio de Janeiro

ISSN

0589-1485

Print_ISBN

978-1-4799-5205-2

Type

conf

DOI

10.1109/CPEM.2014.6898461

Filename

6898461