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Manipulation of vortex and anti-vortex states in small superconductors with antidots

Research Project

Project/Area Number 26287075
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypePartial Multi-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionThe University of Electro-Communications

Principal Investigator

KOKUBO NOBUHITO  電気通信大学, 大学院情報理工学研究科, 准教授 (80372340)

Co-Investigator(Kenkyū-buntansha) 岡安 悟  国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究主幹 (50354824)
Co-Investigator(Renkei-kenkyūsha) Nojima Tsutomu  東北大学, 金属材料研究所, 准教授 (80222199)
Project Period (FY) 2014-04-01 – 2018-03-31
Project Status Completed (Fiscal Year 2017)
Budget Amount *help
¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2014: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
Keywords超伝導材料・素子 / 量子渦 / メゾスコピック系 / 走査プローブ顕微鏡 / 低温物性 / 超伝導素子 / 量子渦(磁束量子) / 走査プローブ顕微鏡(SSM) / SPMプローブ顕微鏡(SSM)
Outline of Final Research Achievements

We have investigated vortex states confined in small squares of superconducting thin films with strategically introduced antidots. Scanning SQUID microscope images allow us to trace how vortices are trapped in antidots in different vorticities. We obtained several novel findings of (1) unique configurations of singly and multiply quantized vortices, (2) configurational symmetry and stability of the vortex states imposed with antidots, including interstitial vortices between antidots. We also manipulated the vortex states by utilizing the field history and the pinning effect in antidots and succeeded in visualizing vortex and antivortex clusters.

Report

(5 results)
  • 2017 Annual Research Report   Final Research Report ( PDF )
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (37 results)

All 2018 2017 2016 2015 2014 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results,  Acknowledgement Compliant: 3 results) Presentation (30 results) (of which Int'l Joint Research: 7 results,  Invited: 1 results) Book (1 results) Remarks (1 results)

  • [Journal Article] Direct observation of magnetic flux and interstitial vortices in perforated mesoscopic squares of superconducting films2018

    • Author(s)
      Mitsuishi M、Kokubo N、Kitano K、Okayasu S、Nojima T、Sasaki T
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 969 Pages: 012074-012074

    • DOI

      10.1088/1742-6596/969/1/012074

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Flux-flow instability in 2H-NbSe2 superconducting thin crystals stamped on SiO2/Si substrates2018

    • Author(s)
      Yoshida J、Ando H、Kokubo N
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 969 Pages: 012073-012073

    • DOI

      10.1088/1742-6596/969/1/012073

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Vortex shells in mesoscopic stiangles of amorphous superconducting thin films2016

    • Author(s)
      N. Kokubo, H. Miyahara, S. Okayasu, T. Nojima
    • Journal Title

      Physica C

      Volume: 530 Pages: 42-45

    • DOI

      10.1016/j.physc.2016.05.009

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 幾何学的構造を持つ微小超伝導体に閉じ込めた量子渦配列2015

    • Author(s)
      小久保伸人
    • Journal Title

      固体物理

      Volume: 594 Pages: 437-446

    • Related Report
      2015 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] Commensurate and incommensurate Vortex States Confined in Mesoscopic Triangles of Weak Pinning Superconducting Thin Films2015

    • Author(s)
      N. Kokubo, H. Miyahara, S. Okayasu, and T. Nojima
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: 84 Issue: 4 Pages: 043704-043704

    • DOI

      10.7566/jpsj.84.043704

    • NAID

      40020425834

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] 走査 SQUID 顕微鏡で観測した微小超伝導体の渦糸・反渦糸状態2018

    • Author(s)
      小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] アンチドット型超伝導渦糸セルの磁気像と電流分布解析2018

    • Author(s)
      織田健佑、小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会第73回年次大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 微小超伝導体に導入したアンチドット配列と渦糸・反渦糸状態2018

    • Author(s)
      小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      ワークショップ 「新規超伝導体・ナノ構造超伝導体における渦糸物理」
    • Related Report
      2017 Annual Research Report
  • [Presentation] 微細孔をもつ微小な正方形超伝導体の磁束状態2017

    • Author(s)
      小久保伸人、北野恒平、三石真里江、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2017-03-20
    • Related Report
      2016 Annual Research Report
  • [Presentation] アンチドットをもつ微小正方形アモルファス超伝導膜の磁束状態2017

    • Author(s)
      北野恒平、小久保伸人、三石真里江、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会第72回年次大会
    • Place of Presentation
      大阪大学(大阪府豊中市)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Annual Research Report
  • [Presentation] 微小超伝導体に閉じ込めた磁束状態の可視化と制御2017

    • Author(s)
      小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      ナノトライボロジー研究ステーション主催「電通大-理科大合同研究会」
    • Place of Presentation
      電気通信大学(東京都調布市)
    • Year and Date
      2017-03-08
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] 人工ピン止めを導入した正方形状の微小超伝導体における磁束配列2017

    • Author(s)
      北野恒平、三石真里江、小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      ナノトライボロジー研究ステーション主催「電通大-理科大合同研究会」
    • Place of Presentation
      電気通信大学(東京都調布市)
    • Year and Date
      2017-03-08
    • Related Report
      2016 Annual Research Report
  • [Presentation] 微細孔を用いた微小超伝導体の磁束状態と制御2017

    • Author(s)
      小久保伸人、北野恒平、三石真里江、岡安悟、野島勉、佐々木孝彦
    • Organizer
      ワークショップ「ナノ構造超伝導体中の渦糸物理」
    • Place of Presentation
      大阪府立大学(大阪府堺市)
    • Year and Date
      2017-01-29
    • Related Report
      2016 Annual Research Report
  • [Presentation] Observation of fluxoid states and interstitial vortices in perforated mesoscopic triangle of amorphous superconducting films2017

    • Author(s)
      Mitsuishi M、Kokubo N、Okayasu S、Nojima T、 Sasaki T
    • Organizer
      30th International Symposium on Superconductivity
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Manipulation of Fluxon States in Microstructured Superconducting Thin Films2017

    • Author(s)
      Kokubo N、Okayasu S、Nojima T、 Sasaki T
    • Organizer
      10 th international conference on vortex matter in nanostructured superconductors (Vortex X)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of flux states and interstitial vortices in perforated mesoscopic squares of amorphous superconducting films2017

    • Author(s)
      Mitsuishi M、Kokubo N、Kitano K、Okayasu S、Nojima T、 Sasaki T
    • Organizer
      The 28th International Conference on Low Temperature Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flux-flow instability in cleaved thin films of 2H-NbSe2 single crystals2017

    • Author(s)
      Yoshida J、Ando H、Kokubo N
    • Organizer
      The 28th International Conference on Low Temperature Physics
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 微小超伝導体の微細孔に誘起した磁束状態2017

    • Author(s)
      小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      第25回渦糸物理国内会議
    • Related Report
      2017 Annual Research Report
  • [Presentation] メソズコピック超伝導チャネルに閉じ込めた渦糸ダイナミクス2017

    • Author(s)
      小久保伸人、R. Besseling、P. H. Kes
    • Organizer
      電気通信大学ナノトラポロジー研究センター第一回シンポジウム「表面・界面の科学と摩擦」
    • Related Report
      2017 Annual Research Report
  • [Presentation] アンチドットをもつ微小アモルファス超伝導体の磁束状態2017

    • Author(s)
      三石真里江、小久保伸人、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会 2017年秋季大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 微細孔を用いた微小超伝導体の磁束状態と制御2016

    • Author(s)
      小久保伸人 北野恒平,三石真里江、岡安悟,野島勉,佐々木孝彦
    • Organizer
      第24回渦糸物理国内会議
    • Place of Presentation
      あきた芸術村(秋田県仙北市)
    • Year and Date
      2016-11-28
    • Related Report
      2016 Annual Research Report
  • [Presentation] Manipulation of Magnetic Flux States in Superconducting Squares with Artificial Pinning Sites2016

    • Author(s)
      Kohei Kitano, Nobuhito Kokubo, Satoru Okayasu, Tsutomu Nojima Takahiko Sasaki
    • Organizer
      The 29th International Superconductivity Symposium
    • Place of Presentation
      Tokyo International Forum(Tokyo, Chiyoda-ku)
    • Year and Date
      2016-11-15
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 走査SQUID磁気顕微鏡で観測した微小超伝導体の渦糸状態と人工ピン止め2016

    • Author(s)
      北野恒平、岡安悟、野島勉、佐々木孝彦、小久保伸人
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-15
    • Related Report
      2016 Annual Research Report
  • [Presentation] 人工ピン止めを導入した正方形状の微小超伝導体における渦糸状態2016

    • Author(s)
      小久保伸人、北野恒平、岡安悟、野島勉、佐々木孝彦
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      金沢大学(石川県金沢市)
    • Year and Date
      2016-09-14
    • Related Report
      2016 Annual Research Report
  • [Presentation] 三角形状の微小超伝導体における多重渦状態と殻構造2016

    • Author(s)
      小久保伸人,宮原大,岡安悟,野島勉,佐々木孝彦
    • Organizer
      日本物理学会第71回年次大会
    • Place of Presentation
      東北学院大学(宮城県・仙台市)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 多重渦状態と殻構造2015

    • Author(s)
      小久保伸人,宮原大,岡安悟,野島勉
    • Organizer
      第23回渦糸物理国内会議
    • Place of Presentation
      休暇村志賀島(福岡県・福岡市)
    • Year and Date
      2015-12-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] 微細構造を持つ微小超伝導体に閉じ込めた多重渦状態と制御2015

    • Author(s)
      小久保伸人,北野恒平,望月麟太郎,岡安悟,野島勉
    • Organizer
      第23回渦糸物理国内会議
    • Place of Presentation
      休暇村志賀島(福岡県・福岡市)
    • Year and Date
      2015-12-07
    • Related Report
      2015 Annual Research Report
  • [Presentation] Observation of Multi-Vortex States Confined in Mesoscopic Superconductors of Different Geometric Shapes2015

    • Author(s)
      Nobuhito Kokubo, Satoru Okayasu, Tsutomu Nojima, Takahiko Sasaki
    • Organizer
      28th International Symposium on Superconductivity
    • Place of Presentation
      Tower Hall Funabori(Tokyo・Edogawa)
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Unusual I-V Characteristics and Flux Flow Instability in 2H-NbSe2 Superconductors2015

    • Author(s)
      Junichiro Yoshida, Nobuhito Kokubo
    • Organizer
      28th International Symposium on Superconductivity
    • Place of Presentation
      Tower Hall Funabori(Tokyo・Edogawa)
    • Year and Date
      2015-11-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] NbSe2超伝導体における特異な電流電圧特性と渦糸フローの不安定化2015

    • Author(s)
      吉田純一朗, 小久保伸人
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学(大阪府・吹田市)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] アンチドット構造をもつ超伝導二層膜に閉じ込めた渦糸状態と電流制御2015

    • Author(s)
      望月麟太郎, 岡安悟, 野島勉, 佐々木孝彦, 小久保伸人
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学(大阪府・吹田市)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 周期的微細構造をもつアモルファス超伝導膜に誘起された渦糸状態2015

    • Author(s)
      北野恒平, 望月麟太郎, 小久保伸人
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学(大阪府・吹田市)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 三角形状のアモルファスMoGe超伝導体における量子渦状態の直接観測2015

    • Author(s)
      宮原大、北野恒平、岡安悟、野島勉、小久保伸人
    • Organizer
      第70回日本物理学会年次大会
    • Place of Presentation
      早稲田大学(東京都新宿区)
    • Year and Date
      2015-03-21 – 2015-03-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] 三角形状に加工したアモルファスMoGe超伝導膜における量子渦配列の直接観測2014

    • Author(s)
      宮原大、 岡安悟、野島勉、小久保伸人
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学(愛知県)
    • Year and Date
      2014-09-07 – 2014-09-11
    • Related Report
      2014 Annual Research Report
  • [Presentation] 微小超伝導体の幾何学的形状と量子渦配列2014

    • Author(s)
      小久保伸人、宮原大、岡安悟、野島勉
    • Organizer
      第22 回渦糸物理国内会議
    • Place of Presentation
      ハイランドふらの(北海道富良野市)
    • Year and Date
      2014-07-10 – 2014-07-12
    • Related Report
      2014 Annual Research Report
  • [Book] Multi-Vortex in Mesoscopic Superconductors (Chapter 3), The Oxford Handbook of Small Superconductors2017

    • Author(s)
      N. Kokubo, S. Okayasu, K. Kadowaki
    • Total Pages
      29
    • Publisher
      Oxford University Press
    • Related Report
      2016 Annual Research Report
  • [Remarks] 研究ノート 幾何学的な構造を持つ微小超伝導体に閉じ込めた磁束状態

    • URL

      http://www.clts.tohoku.ac.jp/publication.html

    • Related Report
      2015 Annual Research Report

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Published: 2014-04-04   Modified: 2020-05-15  

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