Title :
12 K operation of 2 V Josephson voltage standard circuit using NbN/TiN/NbN junctions
Author :
Yamamori, H. ; Sasaki, H. ; Kohjiro, S. ; Nakamura, Y.
Author_Institution :
Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan
Abstract :
A programmable Josephson voltage standard (PJVS) circuit including 65,536 NbN/TiN/NbN Josephson junctions has been demonstrated at temperature of 12 K cooled with a cryocooler. The upper limit of the operating temperature has found to be about 13 K, while the operating margin significantly degraded.
Keywords :
cooling; measurement standards; niobium compounds; superconducting junction devices; titanium compounds; NbN-TiN-NbN; cryocooler; operating temperature; programmable Josephson voltage standard circuit; temperature 12 K; voltage 2 V; Circuits; Tin; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2010 Conference on
Conference_Location :
Daejeon
Print_ISBN :
978-1-4244-6795-2
DOI :
10.1109/CPEM.2010.5545104
