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New devices based on duality picture of superconductor- insulator transitions on Superconducting nanowire

Research Project

Project/Area Number 16K04877
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Nanostructural physics
Research InstitutionKyushu University

Principal Investigator

Shinozaki Bunju  九州大学, 理学研究院, 名誉教授 (80117126)

Co-Investigator(Kenkyū-buntansha) 浅野 貴行  福井大学, 学術研究院工学系部門, 准教授 (00301333)
牧瀬 圭正  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 主任研究員 (60363321)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Keywords超伝導細線 / 位相すべり / 超伝導絶縁体転移 / 異常磁気抵抗 / 量子位相すべり / 磁気抵抗 / 位相揺らぎ / エピタキシャル膜 / 電気輸送特性 / 窒化物超伝導体 / 超伝導素子 / 量子効果 / 超伝導ナノワイヤー
Outline of Final Research Achievements

Aiming at the realization of quantum wire devices, in order to clarify the superconducting-insulator transition in quasi-one-dimensional and two-dimensional samples of NbN, NbTiN and MoReN, the electrical transport characteristics were investigated by the DC four-terminal method, The following results were obtained. 1) With NbTiN nanowires, the R (T) characteristics at the temperatures T <Tc were analyzed using thermally activated phase slip and quantum phase slip theories. From the analysis of thin-wire R dependence of Tc, the superconducting-insulator transition can be explained by the quantized flux-charge duality theory. 2) For NbN nanowires on Si 3 C substrate, it was found that the external magnetic field strongly suppressed only the quantum phase slip effect. This result means that the magnetic field induces superconductivity because of the negative magneto resistance.

Academic Significance and Societal Importance of the Research Achievements

近年、量子コンピューターへの応用や物理定数の高精度決定等の基礎科学への展開等の見地から、超伝導量子回路の実用化が期待視され、回路高集積化や応用範囲を広げる量子細線素子の研究がおこなわれている。しかし、量子細線では酸化による劣化や酸素由来の磁性がない、高インピーダンスな特性も必要となるため既存の材料では実現が難しい。そこで窒化物を使ったアモルファス膜による新しい材料を開発し、窒化物を用いた超伝導細線で実験・解析を行い、細線が電子回路実用化への基礎理論を満足する結果を得た。一方、その過程で、これまでに観測・報告例のない巨大磁気抵抗を示す細線を可能にした。新しい素子の可能性を示している。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (29 results)

All 2019 2018 2017 2016

All Journal Article (7 results) (of which Peer Reviewed: 6 results,  Open Access: 1 results,  Acknowledgement Compliant: 2 results) Presentation (22 results) (of which Int'l Joint Research: 9 results)

  • [Journal Article] The temperature dependence of mobility of conducting polymer polyaniline with secondary dopant2019

    • Author(s)
      K. Yamada, B. Shinozaki, T. Narikiyo, Y. Takigawa, N. Kuroda, and H. Nakamura
    • Journal Title

      Synthetic Metals

      Volume: 247 Pages: 124-130

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Estimations of superconducting fluctuation effects in amorphous MoRu and MoRe alloy thin films2018

    • Author(s)
      K. Makise, Y. Mizokami, T. Nogami, G. Sawada, T. Asano, B. Shinozaki, F. Ichikawa
    • Journal Title

      Material research Express

      Volume: 5 Pages: 096406-096410

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Field- Tuned superconductor-insulator transition and Hall resistance in thin polycrystalline MoN films2018

    • Author(s)
      K. Makise, F. Ichikawa, T. Asano and B. Shinozaki
    • Journal Title

      J.Phys.:Condens. Matter

      Volume: 30

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vortex dynamics in superconducting transition edge sensors2018

    • Author(s)
      S. Ezaki, K. Maehata, N. Iyomoto, T. Asano and B.Shinozaki
    • Journal Title

      J. Appl. Phys.

      Volume: 123

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Localization and pair breaking parameter in superconducting Molybdenum Nitride Thin Films2017

    • Author(s)
      T. Tsuneoka, K. Makise, S. Maeda, B. Shinozaki, F. Ichikawa
    • Journal Title

      J. Phys.: Condens. Matter

      Volume: 29 015701

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Fabrication and Characterization of Epitaxial Films of Superconductor NbN and Highly Spin-Polarized Heusler Alloy Co2Fe0.4Mn0.6Si2017

    • Author(s)
      I. Shigeta, T. Kubota, K. Makise, S. Kimura, S. Awaji, B. Shinozaki, K. Koyama, K. Takanashi, M. Hiroi
    • Journal Title

      IEEE Magnetics Letters

      Volume: 印刷中

    • Related Report
      2016 Research-status Report
  • [Journal Article] Duality picture of superconductor-insulator transitions on Superconducting nanowire2016

    • Author(s)
      K. Makise, H. Terai, Y. Tominari, S. Tanaka and B. Shinozaki
    • Journal Title

      Scientific reports

      Volume: 6

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] アモルファスMoReN薄膜による位相すべりと2次元超伝導-絶縁体転移2019

    • Author(s)
      牧瀬圭正, 澤田元気, 篠崎文重, 市川聡夫
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] クロミック化合物CuMoO4の磁性と結晶粒径の相関II2018

    • Author(s)
      浅野貴行、牧瀬圭正、篠崎文重
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ハーフメタルホイスラー合金CFMS/超伝導NbN薄膜の超伝導揺らぎ効果2018

    • Author(s)
      重田出,松岡将吾,窪田崇秀,篠崎文重,高梨弘毅,廣井政彦
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] MoRe薄膜における超伝導―絶縁体転移とゆらぎ2018

    • Author(s)
      澤田元気,溝上裕也,藤野洋平,野上達也,前田翔,牧瀬圭正,篠崎文重,市川聡夫
    • Organizer
      日本物理学会
    • Related Report
      2018 Annual Research Report
  • [Presentation] NbN超伝導細線の上部臨界磁場Hc2(T)2018

    • Author(s)
      篠崎文重、牧瀬圭正、浅野貴行
    • Organizer
      日本物理学会九州支部例会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 超伝導デバイス応用に向けたMoRe 薄膜の作製と評価2018

    • Author(s)
      澤田元気, 溝上裕也, 藤野洋平、野上達也, 前田翔, 牧瀬圭正, 篠崎文重, 市川聡夫
    • Organizer
      日本物理学会九州支部例会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Negative magnetoresistance due to the depression of Quantum phase slip in NbN nanowires2018

    • Author(s)
      Bunju Shinozaki, Kazumasa Makise, Takayuki Asano
    • Organizer
      International superconducting symposium(ISS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Superconductor-insulator transitions and Tc dependence of disorder in superconducting Mo alloy thin films2018

    • Author(s)
      F. Ichikawa, K. Makise, G. Sawada, Y. Mizokami, S. Maeda B. Shinozaki
    • Organizer
      International superconducting symposium(ISS2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NbN ナノワイヤーの輸送特性と磁場誘起超伝導2017

    • Author(s)
      篠崎文重,牧瀬圭正,浅野貴行
    • Organizer
      64回応用物理学会春季学術講演会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
  • [Presentation] NbTiN ナノ構造における異常磁気抵抗2017

    • Author(s)
      牧瀬圭正、浅野貴行、篠崎文重
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] 超伝導MoN 及びMoRu薄膜における超伝導ー絶縁体転移と局在効果2017

    • Author(s)
      溝上裕也、藤野洋平、野上達也、前田翔、常岡拓哉、牧瀬圭正、篠崎文重、市川総夫
    • Organizer
      日本物理学会2017年秋季大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Quantum phse slip and enhancement of superconductivity by magnetic field in NbN nanowire2017

    • Author(s)
      B. Shinozaki and K. Makise and T. Asano
    • Organizer
      28th Internaional conference of low temperaturephysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Fluctuation above Tc and pair breaking parameters of two dimensional NbN films2017

    • Author(s)
      B. Shinozaki, S. Ezaki, T. Odou, K. Makise and T. Asano
    • Organizer
      28th Internaional conference of low temperaturephysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Tc depression and superconductor-insulator transition in MoN thin films2017

    • Author(s)
      F. Ichikawa, K. Makise, T. Tuneoka, S. Maeda, B. Shinozai
    • Organizer
      28th Internaional conference of low temperaturephysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Elecrical transport properites of epitaxial titanium nitride nanowire2017

    • Author(s)
      K. Makise and B. Shinozaki
    • Organizer
      28th Internaional conference of low temperaturephysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Superconducting-insulator transitions in sputtered amorphous MoRu and MoRuN thin films2017

    • Author(s)
      K. Makise, B. Shinozaki and F. Ichikawa
    • Organizer
      28th Internaional conference of low temperaturephysics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Inelastic scattering rate of electron near superocnducting transition temperature of NbN thin films2017

    • Author(s)
      B. Shinozaki and K. Makise
    • Organizer
      30th International superconducting symposium(2017ISS)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Negative resistance in niobium titanium nitride nanowire for flux based superconducting device2017

    • Author(s)
      K. Makise and B. Shinozaki
    • Organizer
      30th International superconducting symposium(2017ISS)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 超伝導細線の位相すべりとデバイス応用2017

    • Author(s)
      牧瀬圭正、篠崎文重、浅野貴行、浮辺雅宏
    • Organizer
      2017年度秋季低温工学・超伝導学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 超伝導細線における以上磁気抵抗III2017

    • Author(s)
      篠崎文重、牧瀬圭正、浅野貴行
    • Organizer
      日本物理学会九州支部例会
    • Related Report
      2017 Research-status Report
  • [Presentation] 炭化シリコン基板上のNbNナノワイヤーの輸送特性2016

    • Author(s)
      牧瀬圭正, 浅野貴行, 篠崎文重
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学
    • Year and Date
      2016-09-13
    • Related Report
      2016 Research-status Report
  • [Presentation] 超伝導細線における異常磁気抵抗-II2016

    • Author(s)
      篠崎文重, 牧瀬圭正
    • Organizer
      日本物理学会九州支部例会
    • Place of Presentation
      福岡大学
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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