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Single-Chip 10-V Programmable Josephson Voltage Standard System Based on a Refrigerator and Its Precision Evaluation

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9 Author(s)
Yamada, T. ; Nanoelectron. Res. Inst., Nat. Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan ; Urano, C. ; Nishinaka, H. ; Murayama, Y.
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We precisely evaluated a single-chip 10-V programmable Josephson voltage standard (PJVS) system based on a closed-cycle refrigerator by directly comparing it with a conventional Josephson voltage standard system. The PJVS chip fabricated using NbN/TiNx/NbN junction technology was used. The result of the measurement showed a good agreement with a combined standard uncertainty of 3.1 parts in 1010 at 10 V.

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Applied Superconductivity, IEEE Transactions on  (Volume:20 ,  Issue: 1 )