Evaluation of Superconducting Junctions with Magnetic Point and Fundamental Study for Three Terminal Devices

• Project/Area Number: 21560372
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Electron device/Electronic equipment
• Research Institution: Kanagawa University
• Principal Investigator: NAKAYAMA Akiyoshi 神奈川大学, 工学部, 教授 (90183524)
• Co-Investigator(Kenkyū-buntansha): ABE Susumu 神奈川大学, 工学部, 准教授 (10333147)
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2009: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 超伝導 / 磁性体 / 三端子素子 / 磁界制御 / 点状磁性体 / 異種接合 / 超伝導電流 / ヒステリシス特性

Research Abstract

We are able to deposit the nickel thin films by magnetron sputtering in high vacuum system. The niobium/oxide-barrier/nickel/niobium sandwich structure was obtained by connecting the sputtering chambers using vacuum tunnel in which samples can be carried from one chamber to another without breaking the vacuum. We also measured the Josephson current and finite voltage steps of the superconducting junctions and evaluated the two-dimensional magnetic field dependence of these steps.

Research Products

• [Journal Article] Two-dimensional magnetic field dependence of Josephson current and resonant current steps at finite voltage of square shape superconducting tunnel junctions (2012)
  • Author(s): Akiyoshi Nakayama, Susumu Abe, Norimichi Watanabe
  • Journal Title: Journal of Applied Physics Volume: (掲載決定)
  • Peer Reviewed
• [Journal Article] Modulation Characteristics of DC Josephson Current through Niobium Tunnel Junction by Applying External Magnetic Field in Perpendicular Direction (2012)
  • Author(s): Akiyoshi NAKAYAMA, Susumu ABE, Norimichi WATANABE, Yoichi OKABE
  • Journal Title: Journal of Nanoscience and Nanotechnology Volume: Vol.12 Pages: 1-4
  • Peer Reviewed
• [Journal Article] Magnetic Field Measurement near a Superconducting Film Using a 2-Dimensinal Field-Dependence of Josephson Current through a Nb Tunnel Junction Sensor (2012)
  • Author(s): Akiyoshi NAKAYAMA, Susumu ABE, Norimichi WATANABE, Yoichi OKABE
  • Journal Title: Journal of Nanoscience and Nanotechnology Volume: Vol.12 Pages: 1-5
  • Peer Reviewed
• [Journal Article] Measurement of perpendicular magnetic field dependence of the Josephson current by a three-dimensional scan of the external magnetic field (2010)
  • Author(s): Norimichi Watanabe, Akiyoshi Nakayama, Susumu Abe and Koji Masuda
  • Journal Title: Journal of Physics conference series Volume: Vol.234
  • Peer Reviewed
• [Journal Article] Measurement of trapped flux magnetic field near the superconducting film by the dependence of superconducting current through a Josephson junction sensor (2010)
  • Author(s): Akiyoshi Nakayama, Yohei Nishi, Norimichi Watanabe, Susumu Abe and Yoichi Okabe
  • Journal Title: Journal of Physics conference series Volume: Vol.234
  • Peer Reviewed
• [Journal Article] Measurement of trapped flux magnetic field near the superconducting film by two-dimensional magnetic field dependence of superconducting current through Josephson junction sensor (2010)
  • Author(s): A.Nakayama, Y.Nishi, N.Watanabe, S.Abe, Y.Okabe
  • Journal Title: Journal of Physics, Conf.Ser. Volume: 234
  • Peer Reviewed
• [Journal Article] Measurement of perpendicular magnetic field dependence of Josephson current by three-dimensional scan of external magnetic field (2010)
  • Author(s): N.Watanabe, A.Nakayama, S.Abe, K.Masuda
  • Journal Title: Journal of Physics, Conf.Ser. Volume: 234
  • Peer Reviewed
• [Journal Article] Perpendicular applied magnetic field dependence of Josephson current and measurement of trapped magnetic flux in Nb superconducting thin film by vibrating sample magnetomete (2009)
  • Author(s): Norimichi Watanabe, Akiyoshi Nakayama, Susumu Abe, Mitsunori Suda, Yohei Nishi, Koji Masuda, Chisato Sugaya
  • Journal Title: Journal of Applied Physics Volume: 105 Pages: 7-312
  • Peer Reviewed
• [Journal Article] Perpendicular applied magnetic field dependence of Josephson current and measurement of trapped magnetic flux in Nb superconducting thin film by vibrating sample magnetometer (2009)
  • Author(s): N.Watanabe, A.Nakayama, S.Abe, M.Suda, Y.Nishi, K.Masuda, C.Sugaya
  • Journal Title: Journal of Applied Physics. 105
  • Peer Reviewed
• [Journal Article] Two-dimensional magnetic field dependence of Josephson current and resonant current steps at finite voltage of square shape superconducting tunnel junctions
  • Author(s): A.Nakayama, S.Abe, N.Watanabe
  • Journal Title: Journal of Applied Physics Volume: (掲載確定)
  • Peer Reviewed
• [Journal Article] Measurement of Magnetic Field near the Superconducting Film Using 2-Dimensinal Magnetic Field Dependence of Josephson Current through Niobium Tunnel Junction Sensor
  • Author(s): A.Nakayama, S, Abe, N.Watanabe, Y.Okabe
  • Journal Title: Journal of Applied Physics Volume: (掲載確定)
  • Peer Reviewed
• [Journal Article] Modulation Characteristics of DC Josephson Current through Niobium Tunnel Junction by Applying the External Magnetic Field in Perpendicular Direction
  • Author(s): A.Nakayama, S, Abe, N.Watanabe, Y.Okab
  • Journal Title: Journal of Applied Physics Volume: (掲載確定)
  • Peer Reviewed
• [Presentation] Measurement of Magnetic Field near the Superconducting Film Using 2-Dimensinal Magnetic Field Dependence of Josephson Current through Niobium Tunnel Junction Sensor (2010)
  • Author(s): Akiyoshi NAKAYAMA, Susumu ABE, Norimichi WATANABE, Yoichi OKABE
  • Organizer: NANOSMAT-5 Reims International conference center
  • Place of Presentation: Reims, France
  • Year and Date: 2010-10-21
• [Presentation] Measurement of Magnetic Field near the Superconducting Film Using 2-Dimensinal Magnetic Field Dependence of Josephson Current through Niobium Tunnel Junction Sensor (2010)
  • Author(s): Akiyoshi NAKAYAMA, Susumu ABE, Norimichi WATANABE, Yoichi OKABE
  • Organizer: NANOSMAT-5
  • Place of Presentation: フランス国際会議場 Reims,France
  • Year and Date: 2010-10-21
• [Presentation] Measurement of perpendicular magnetic field dependence of the Josephson current by a three-dimensional scan of the external magnetic field (2010)
  • Author(s): Norimichi Watanabe, Akiyoshi Nakayama, Susumu Abe and Koji Masuda
  • Organizer: NANOSMAT-5, Reims International conference center
  • Place of Presentation: Reims, France
  • Year and Date: 2010-10-19
• [Presentation] Modulation Characteristics of DC Josephson Current through Niobium Tunnel Junction by Applying the External Magnetic Field in Perpendicular Direction (2010)
  • Author(s): Akiyoshi NAKAYAMA, Susumu ABE, Norimichi WATANABE, Yoichi OKABE
  • Organizer: NANOSMAT-5
  • Place of Presentation: フランス国際会議場 Reims,France
  • Year and Date: 2010-10-19
• [Presentation] 超伝導薄膜近くのジョセフソン接合を流れる超伝導電流の2次元磁界特性 (2010)
  • Author(s): 中山、阿部、西、渡邉、岡部
  • Organizer: 電子情報通信学会全国大会
  • Place of Presentation: 大阪府立大大阪
  • Year and Date: 2010-09-14
• [Presentation] 超伝導薄膜近くのジョセフソン接合を流れる超伝導電流の2次元磁界特性 (2010)
  • Author(s): 中山、阿部、西、渡邉、岡部
  • Organizer: 電子情報通信学会全国大会
  • Place of Presentation: 大阪府立大 大阪
  • Year and Date: 2010-09-14
• [Presentation] Measurement of perpendicular field dependence of Josephson current by three-dimensional scan of external magnetic field (2009)
  • Author(s): Norimichi Watanabe, Akiyoshi Nakayama, Susumu Abe, Koji Masuda
  • Organizer: 9th European Conference on Applied Superconductivity(EUCAS) Dresden Institute of Technology
  • Place of Presentation: Dresden, Germany
  • Year and Date: 2009-09-15
• [Presentation] Measurement of trapped flux magnetic field near superconducting film by twe-dimensional magnetic field dependence of superconducting current through Josephson junction sensor (2009)
  • Author(s): Akiyoshi Nakayama, Norimichi Watanabe, Yohei Nishi, Susumu Abe, Yoichi Okabe
  • Organizer: 9th European Conference on Applied Superconductivity(EUCAS) Dresden Institute of Technology
  • Place of Presentation: Dresden, Germany
  • Year and Date: 2009-09-14
• [Presentation] 伝導接合を流れるジョセフソン電流の外部磁界2次元走査による変調特性 (2009)
  • Author(s): 中山明芳、阿部晋渡邉騎通
  • Organizer: SEC超電導研究会
  • Place of Presentation: 機械振興会館
  • Year and Date: 2009-07-21
• [Presentation] Modulation of Josephson Current through Nb Junctions by Three-dimensional Scan of External Magnetic Field (2009)
  • Author(s): Akiyoshi Nakayama, Norimichi Watanabe, Susumu Abe, Yohei Nishi, Koji Masuda.
  • Organizer: International Superconductive Electronics Conference TD-P12
  • Place of Presentation: Fukuoka Japan
  • Year and Date: 2009-06-17
• [Presentation] 超伝導接合の三次元磁界変調特性とジョセフソン電流の垂直磁界依存性 (2009)
  • Author(s): 渡邊、中山、阿部、須田、西、増田、菅谷
  • Organizer: 電子通信学会総合大会
  • Place of Presentation: 松山大学、松山
  • Year and Date: 2009-03-20
• [Presentation] 超伝導接合の三次元磁界変調特性とジョセフソン電流の垂直磁界依存性 (2009)
  • Author(s): 渡邉、中山、阿部、須田、西、増田、菅谷
  • Organizer: 電子情報通信学会総合大会
  • Place of Presentation: 松山市
  • Year and Date: 2009-03-17
• [Presentation] "Measurment of trapped flux magnetic field near the superconducting film by two-dimensional magnetic field dependence of superconducting current through Josephson junction sensor", 2009-8 (2009)
  • Author(s): A.Nakayama, Y.Nishi, N.Watanabe, S.Abe, Y.Okabe
  • Organizer: EUCAS
  • Place of Presentation: Dresden, Germany
• [Presentation] Measurement of perpendicular magnetic field dependence of Josephson current by three-dimensional scan of external magnetic field (2009)
  • Author(s): N.Watanabe, A.Nakayama, S.Abe, K.Masuda
  • Organizer: EUCAS
  • Place of Presentation: Dresden, Germany
• [Presentation] "Modulation of Josephson Current through Nb Junctions by Three-dimensional Scan of External Magnetic Field" International Superconductive Electronics Conference 2009, TD-P12 (2009)
  • Author(s): A.Nakayama, N.Watanabe, S.Abe, Y, Nishi, K, Masuda
  • Organizer: International Superconductive Electronics Conference
  • Place of Presentation: Fukuoka Japan
• [Remarks]
  • URL: http://www.kanagawa-u.ac.jp