Development of high temperature superconducting monolithic voltage standard with topotactic waveguide structure

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K14251
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Electron device/Electronic equipment
• Research Institution: Nagaoka University of Technology
• Principal Investigator: Takahiro Kato 長岡技術科学大学, 工学研究科, 助教 (10432098)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 電圧標準器 / 超伝導

Outline of Final Research Achievements

In this research, we attempted to develop a monolithic voltage standard device integrated sub-millimeter source / quantized constant voltage generator which were coupled by topotactic BiOCl dielectric layer formed by immersing Bi-2212 single crystal in very low concentration hydrochloric acid solution. In this study, we developed an device fabrication process that integrates oscillator and detector in Bi-2212 single crystal. In the electromagnetic wave detection experiment, we succeeded in observing Shapiro step-like responses in the detector. We also examined the terahertz band dielectric properties of BiOCl crystals and clarified the real part of the refractive index is about 3. In the future, We would like to clarify the origin of the detected voltage steps and develop it as the voltage standard.

Free Research Field

超伝導エレクトロニクス