Title :
Josephson series arrays with NbSi barrier for ac voltage standards
Author :
Kohlmann, J. ; Müller, F. ; Kieler, Oliver ; Scheller, T. ; Egeling, B. ; Wendisch, R. ; Behr, R.
Author_Institution :
Phys.-Tech. Bundesanstalt (PTB), Braunschweig, Germany
Abstract :
The overdamped Josephson junctions for ac voltage standards are realized with NbxSi1-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;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM 2014), 2014 Conference on
Conference_Location :
Rio de Janeiro
Print_ISBN :
978-1-4799-5205-2
DOI :
10.1109/CPEM.2014.6898461
