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

Author

Yamada, Takahiro, Urano, Chiharu, Nishinaka, Hidefumi, Murayama, Yasushi, Iwasa, Akio, Yamamori, Hirotake, Sasaki, Hitoshi, Shoji, Akira, and Nakamura, Yasuhiro

Subjects
*JOSEPHSON junctions, *CRYOELECTRONICS, *INTEGRATED circuits, *REFRIGERATORS, *ELECTRIC potential
Abstract

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. [ABSTRACT FROM AUTHOR]

Published
2010
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