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2007 Fiscal Year Annual Research Report

キャビティを用いて同期化した大規模ジョセフソン接合アレーによるテラヘルツ光の発振

Research Project

Project/Area Number 18760261
Research InstitutionNational Institute for Materials Science

Principal Investigator

WANG Huabing  National Institute for Materials Science, ナノシステム機能センター, 主幹研究員 (70421427)

Keywordsテラヘルツ光の発振 / 準光学系高周波キャビティ / ビスマス系高温超伝導体
Research Abstract

ヘリウム・クライオスタットに準光学系共振器を装着した。電流印加およびマイクロ波照射下での(照射マイクロ波電力・周波数を一定)、固有ジョセフソン接合列(IJJs)の測定結果は、共鳴条件に調整すると顕著な変化を見せ、共振器が正常に動作していることを示した。
接合面積が数百μm×数十μmと巨大なIJJsから、テラヘルツ帯の放射を観測した。検出には、IJJs受信器、およびそれを用いたミキサーを用いた。巨大な試料から、テラヘルツ放射を観測したが、他のグループの報告とは異なり、ほとんどの場合コヒーレンスが取れていなかった。
以上のように、本研究課題の成果として、IJJsからのテラヘルツ放射の観測に成功した。そのメカニズムの解明を通じて、固体テラヘルツ光源の開発を継続して行う。

  • Research Products

    (15 results)

All 2008 2007

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (14 results)

  • [Journal Article] Observation of macroscopic quantum tunneling in a single Bi2Sr2CaCu2O8+d surface intrinsic Josephson junctions2007

    • Author(s)
      S. X. Li
    • Journal Title

      Phys. Rev. Lett 99

      Pages: 037002(1-4)

    • Peer Reviewed
  • [Presentation] Non-volatile flash memory effect in intrinsic Josephson junctions2008

    • Author(s)
      T. Hatano
    • Organizer
      第4回「超伝導ナノサイエンスと応用」研究会
    • Place of Presentation
      有馬、兵庫
    • Year and Date
      2008-03-28
  • [Presentation] THz emission from a slice of high-Tc superconducting single crystal (invited)2008

    • Author(s)
      H. B. Wang
    • Organizer
      2008 APS March Meeting
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2008-03-14
  • [Presentation] Excitation of terahertz emission from intrinsic Josephson junctions-previous experiments and recent progress (invited)2007

    • Author(s)
      H. B. Wang
    • Organizer
      若手研究者のための超伝導ナノサイエンスと応用に関する秋季国際セミナー
    • Place of Presentation
      那須、栃木
    • Year and Date
      20071126-27
  • [Presentation] THz oscillation of intrinsic Josephson junction2007

    • Author(s)
      T. Hatano
    • Organizer
      NVLS2007-CC
    • Place of Presentation
      北九州、福岡
    • Year and Date
      2007-12-17
  • [Presentation] Exploring in-phase high frequency emission from intrinsic Josephson junctions (invited)2007

    • Author(s)
      H. B. Wang
    • Organizer
      Arrays of Quantum Dots and Josephson Junctions (AQDJJ)
    • Place of Presentation
      Pahnuro, Italy
    • Year and Date
      2007-09-27
  • [Presentation] Non-volatile flash memory effect in superconducting intrinsic Josephson junctions by the flow states of Josephson and pancake vortices2007

    • Author(s)
      T. Hatano
    • Organizer
      Arrays of Quantum Dots and Josephson Junctions (AQDJJ)
    • Place of Presentation
      Palinuro, Italy
    • Year and Date
      2007-09-26
  • [Presentation] Non-volatile flash memory effect in superconducting intrinsic Josephson junctions2007

    • Author(s)
      T. Hatano
    • Organizer
      European Conf. on Applied Superconductivity
    • Place of Presentation
      Brussels, Belgian
    • Year and Date
      2007-09-20
  • [Presentation] High frequency vortex devices using intrinsic Josephson junctions (invited)2007

    • Author(s)
      H. B. Wang
    • Organizer
      Vortex Matter in Nanostructured Superconductors (VORTEX V)
    • Place of Presentation
      Rhodes, Greece
    • Year and Date
      2007-09-13
  • [Presentation] Lock-in phenomena of Josephson vortices in Bi-2212 and RE-123 intrinsic Josephson junctions2007

    • Author(s)
      T. Hatano
    • Organizer
      Vortex Matter in Nanostructured Superconductors (VORTEX V)
    • Place of Presentation
      Rhodes, Greek
    • Year and Date
      2007-09-12
  • [Presentation] Natural 3D junction array in crystals of layered oxide superconductors2007

    • Author(s)
      T. Hatano
    • Organizer
      The Doyama Symposium on Advanced Materials (IKETANI 2007)
    • Place of Presentation
      文京区、東京都
    • Year and Date
      2007-09-06
  • [Presentation] High-TC Superconducting Josephson Devices Using High Quality NdBa2Cu3O7-y Thin Films Grown by Tri-Phase Epitaxy2007

    • Author(s)
      K. S. Yun
    • Organizer
      The Doyama Symposium on Advanced Materials (IKETANI 2007)
    • Place of Presentation
      文京区、東京都
    • Year and Date
      2007-09-06
  • [Presentation] Meshed intrinsic Josephson junctions for THz oscillators2007

    • Author(s)
      H. B. Wang
    • Organizer
      International Superconductive Electronics Conference 2007
    • Place of Presentation
      Washington DC, USA
    • Year and Date
      2007-06-11
  • [Presentation] Colossal anisotropic magnetoresistance in pseudo-cubic manganite singlecrystals2007

    • Author(s)
      R. W. Li
    • Organizer
      International Symposium on Advanced Magnetic Materials and Applications
    • Place of Presentation
      Jeju, Korea
    • Year and Date
      2007-05-29
  • [Presentation] d-wave tunnelingg spectroscopy of the superconducting gap in Pr_{2-x}Ce_{x}CuO_{4}/Ag junctions2007

    • Author(s)
      Y. Y. Hsu
    • Organizer
      The International Conference on Strongly Correlated Electron Systems
    • Place of Presentation
      Houston, USA
    • Year and Date
      2007-05-15

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Published: 2010-02-04   Modified: 2016-04-21  

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