한국초전도학회:학술대회논문집

The Korean Superconductivity Society (한국초전도학회)
권호 표지

Detectable frequency and sensitivity of high temperature superconducting Josephson junctions

고온초전도 조셉슨 접합의 고주파 검지 특성 연구

  • Cho, Won-Il (High Tc Superconductivity Laboratory, Department of Physics, Sogang University) ;
  • Shim, Woo-Seok (High Tc Superconductivity Laboratory, Department of Physics, Sogang University) ;
  • Yoo, Jang-Hoon (High Tc Superconductivity Laboratory, Department of Physics, Sogang University) ;
  • Kim, Do-Hyon (High Tc Superconductivity Laboratory, Department of Physics, Sogang University) ;
  • Park, Gwang-Seo (High Tc Superconductivity Laboratory, Department of Physics, Sogang University) ;
  • Song, In-Sang (Microsystems Laboratory, Samsung Advanced Institute of Technology)
  • 조원일 (서강대학교 물리학과, 고온초전도 연구실) ;
  • 심우석 (서강대학교 물리학과, 고온초전도 연구실) ;
  • 유장훈 (서강대학교 물리학과, 고온초전도 연구실) ;
  • 김도현 (서강대학교 물리학과, 고온초전도 연구실) ;
  • 박광서 (서강대학교 물리학과, 고온초전도 연구실) ;
  • 송인상 (삼성종합기술원, 마이크로시스템 연구실)
  • Published : 1999.08.18
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Abstract

We prepared hish T$_c$ Josephson junctions that have different I$_c\;'s$ and R$_n\;'s$ and studied their microwave properties. We measured the current-voltage characteristics of the junctions under the irradiation of 22 GHz electromagnetic wave at various temperatures. from the Shapiro steps, we calculated the maximum detectable frequency and the microwave received power of the junctions. Increasing critical current values increase both maximum detectable frequency and sensitivity. However, increasing temperature increase sensitivity but decrease maximum detectable frequency.

Keywords