Tunneling Characteristics of YBaCuO/MgO/Pb Planar Tunnel Junctions and Observation of Josephson Effect

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概要

• 論文の詳細を見る

• The measurements on reproducible YBa_2Cu_3O_y (YBCO)/MgO/Pb planar tunnel junctions by an in situ fabrication technique are reported. A thin MgO (1.8-6.0 nm) is used as an insulating barrier. The observed tunnel characteristics exhibit a gap opening structure around 20 mV and the zero bias anomaly, similar to those of YBCO/MgO/Au tunnel junctions as previously reported. For junctions with low tunnel resistance, Josephson current is observed. Josephson critical current against external magnetic field exhibits a Fraunhofer-like pattern. Shapiro steps are also observed under microwave irradiation.

• 社団法人応用物理学会の論文
• 1990-04-20

著者

• Shirai K

  Division Of Applied Biology Faculty Of Textile Science And Technology Shinshu University

• Shirai K

  Tokyo Denki Univ. Tokyo

• Shirai Koji

  Institute Of Genetic Resources Faulty Of Agriculture Kyushu University

• FURUYAMA Masafumi

  Institute for Materials Research, Tohoku University

• Iguchi I

  Department Of Physics Tokyo Institute Of Technology

• Iguchi Ienari

  Institute Of Materials Science University Of Tsukuba

• Ohtake H

  Institute For Molecular Science

• KUSUMORI Takeshi

  Institute of Materials Science, University of Tsukuba

• TOMURA Shoji

  Institute of Materials Science, University of Tsukuba

• NASU Masako

  Institute of Materials Science, University of Tsukuba

• OHTAKE Hiroaki

  Institute of Materials Science, University of Tsukuba

• Nasu Masako

  Institute Of Materials Science University Of Tsukuba

• Tomura Shoji

  Institute Of Materials Science University Of Tsukuba

• Kusumori T

  Institute Of Materials Science University Of Tsukuba

• Kusumori Takeshi

  Institute Of Materials Science University Of Tsukuba

• Furuyama M

  Institute Of Materials Science University Of Tsukuba

• Furuyama Masafumi

  Institute For Materials Research Tohoku University

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