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2009 Fiscal Year Annual Research Report

マイクロ波顕微鏡を利用したプロトン移動高速光スイッチ開発の基礎

Research Project

Project/Area Number 21654049
Research InstitutionThe University of Tokyo

Principal Investigator

前田 京剛  The University of Tokyo, 大学院・総合文化研究科, 教授 (70183605)

Co-Investigator(Kenkyū-buntansha) 小川 桂一郎  東京大学, 大学院・総合文化研究科, 教授 (50114426)
Keywordsソフトマテリアル / プロトン互変異性 / マイクロ波電気伝導度 / マイクロ波顕微鏡 / 粉末の電気伝導度測定 / 光スイッチ / 相転移 / 制御
Research Abstract

本研究では,プロトン互変異性物質において,非接触の方法で初めて電気伝導特性を系統的に調べ,さらに,マイクロ波顕微鏡を用いて局所的複素伝導度を測定することにより,新しい相転移のメカニズムを明らかにし,さらにこれらの相転移を光で制御することによりプロトン移動を利用した新しいタイプの光スイッチの開発をすることを最終定な目的としている。
本年度は以下のことを行った。
(0)本研究が採択されたのと相前後して,粉末の伝導度測定を行える10GHzの空洞共振器測定システムが壊れてしまい,新たなシステムを再構築した。新たなシステムでは,旧システムでの問題点を解決すべく改良を加えて,温度の安定度,データの再現性など,旧システムを上回るものができた。
(1)2-ヒドロキシフェナジン(1)及びその誘導体の合成を行った。
(2)2-ヒドロキシフェナジン(1)およびその類縁体のマイクロ波複素伝導度測定をおこなった。それらの結果は,(A)どの物質もヒステリシスを示すが,その大きさ,ヒステリシスの温度には一見して系統性がなく,現時点では構造などとの明確な相関は見られていない。
(3)走査プローブ顕微鏡(SPM)の基本ユニットを設置した。不測のトラブルとその修復に予想外の時間を要したために,本年度は基本ユニットの設置にとどまり,顕微鏡ユニットの改造は次年度の課題となった。

  • Research Products

    (66 results)

All 2010 2009

All Journal Article (22 results) (of which Peer Reviewed: 21 results) Presentation (43 results) Book (1 results)

  • [Journal Article] Superconductivity of FeSe_<0.5>Te_<0.5> Thin Films Grown by Pulsed Laser Deposition2010

    • Author(s)
      Y.Imai
    • Journal Title

      Japanese Journal of Applied Physics 49

      Pages: 023101/1-5

    • Peer Reviewed
  • [Journal Article] Hall effect in superconducting Fe(Se_<0.5>Te_<0.5>)thin films2010

    • Author(s)
      I.Tsukada
    • Journal Title

      Physical Review B 81

      Pages: 054515/1-6

    • Peer Reviewed
  • [Journal Article] Systematic Comparison of Eight Substrates in the Growth of FeSe_<0.5>Te_<0.5> Superconducting Thin Films2010

    • Author(s)
      Y.Imai
    • Journal Title

      Applied Physics Express 3

      Pages: 043102/1-3

    • Peer Reviewed
  • [Journal Article] Superconducting fluctuation proved by time-domain THz spectroscopy of La_<1.85>Sr_<0.15>CuO_4 thin film2010

    • Author(s)
      D.Nakamura
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Rattling motion in ss-pyrochlore compounds explored by the millimeter-wave conductivity measurement2010

    • Author(s)
      A.Maeda
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Crossover from vortex-to-fluctuation picture in the vast vortex-liquid state of cuprate superconductors La_<2-x>Sr_xCuO_4 probed by microwave complex conductivity measurement technique2010

    • Author(s)
      A.Maeda
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Switching-current distribution in underdoped La_<2-x>Sr_xCuO_4 intrinsic Josephson jun〓2010

    • Author(s)
      H.Kitano
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Growth of superconducting FeSe_<0.5>Te_<0.5> thin films by Pulsed Laser Deposition2010

    • Author(s)
      Y.Imai
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] THz conductivity of La_<2-x>Sr_xCuO_4 in the pseudogap region and in the superconductivity state2010

    • Author(s)
      A.Maeda
    • Journal Title

      Physica C (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Experimental Studies to Realize Josephson Junctions and Qubits in Cuprate and Fe-based Superconductors2010

    • Author(s)
      A.Maeda
    • Journal Title

      Journal of Superconductivity and Novel Magnetism (in press (掲載確実))

    • Peer Reviewed
  • [Journal Article] Macroscopic quantum tunneling and thermal activation in a small mesa structured Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions2009

    • Author(s)
      H.Kitano
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 52110/1-4

    • Peer Reviewed
  • [Journal Article] Microwave spectroscopy of 3D-XY critical charge dynamics in electron-doped La_<2-x>Ce_xCuO_4 superconducting thin films2009

    • Author(s)
      H.Kitano
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 052111/1-4

    • Peer Reviewed
  • [Journal Article] Crossover from supercnductivity fluctuation to vortex picture in the vortex state of high-Tc cuprate superconductors2009

    • Author(s)
      A.Maeda
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 052146/1-4

    • Peer Reviewed
  • [Journal Article] Crossover between the classical friction and the nano-scale friction investigated by the transient dynamics of vortices in La_<2-x>Sr_xCuO_4 thin films2009

    • Author(s)
      D.Nakamura
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 52181/1-4

    • Peer Reviewed
  • [Journal Article] Comparison between the first- and the second-junction switchings in a small stack of Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions2009

    • Author(s)
      K.Ota
    • Journal Title

      Journal of Physics : Conference Series 150

      Pages: 052205/1-4

    • Peer Reviewed
  • [Journal Article] Comparative study of macroscopic quantum tunneling in Bi_2Sr_2CaCu_2O_y intrinsic Josephson junctions with different device structures2009

    • Author(s)
      K.Ota
    • Journal Title

      Physical Review B 79

      Pages: 134505/1-11

    • Peer Reviewed
  • [Journal Article] Critical charge dynamics of superconducting La_<2-x>Sr_xCuO_4 thin films probed by complex microwave spectroscopy : Anomalous changes of the universality class by hole doping2009

    • Author(s)
      T.Ohashi
    • Journal Title

      Physical Review B 79

      Pages: 184507/1-20

    • Peer Reviewed
  • [Journal Article] Pedal motion in crystals2009

    • Author(s)
      原田潤
    • Journal Title

      Chem.Soc.Rev. 38

      Pages: 2244-2252

    • Peer Reviewed
  • [Journal Article] Single crystal cis-trans photoisomerizations of 2-(9-anthrylmethylene)-1-indanones2009

    • Author(s)
      原田潤
    • Journal Title

      CrystEng Comm. 11

      Pages: 1235-1239

    • Peer Reviewed
  • [Journal Article] Hydrogen-Bonded Cyclic Dimer Formation in Temperature-Induced Reversal of Tautomerism of Salicylideneanilines2009

    • Author(s)
      T.Fujiwara
    • Journal Title

      J.Phys.Chem.A 113

      Pages: 1822-1826

    • Peer Reviewed
  • [Journal Article] Crystalline-state conformational change of β-nitrostyrenes and its freezing at low temperature2009

    • Author(s)
      原田潤
    • Journal Title

      CrystEngComm. 11

      Pages: 638-642

    • Peer Reviewed
  • [Journal Article] 有機結晶の色変化を理解する-サリチリデンアニリン類のサーモクロミズムの真相-2009

    • Author(s)
      原田潤
    • Journal Title

      現代化学 1月号

      Pages: 25-30

  • [Presentation] Superconducting fluctuation of La_<2-x>Sr_xCuO_4 thin films probed by THz conductivity measurement2010

    • Author(s)
      中村大輔
    • Organizer
      American Physical Society March Meeting
    • Place of Presentation
      Portland, U.S.A.
    • Year and Date
      20100315-20100319
  • [Presentation] THZ conductivity of BaCo_<0.2>Fe_<1.8>As_2 and Fe(Se,Te) superconductor2010

    • Author(s)
      前田京剛
    • Organizer
      American Physical Society March Meeting
    • Place of Presentation
      Portland, U.S.A.
    • Year and Date
      20100315-20100319
  • [Presentation] La2-xSrxCuO4薄膜のテラヘルツ伝導度測定と超伝導ゆらぎ2010

    • Author(s)
      中村大輔
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
  • [Presentation] FeSe_<1-x>Te_x単結晶のマイクロ波表面インピーダンス測定2010

    • Author(s)
      高橋英幸
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
  • [Presentation] La_<2-x>Sr_xCuO_4の磁束液体相におけるマイクロ波複素電気抵抗率の周波数依存性とスケーリン2010

    • Author(s)
      田中遼
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-23
  • [Presentation] Fe(Se,Te)超伝導薄膜のホール効果2010

    • Author(s)
      塚田一郎
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
  • [Presentation] FeTe薄膜の輸送特性2010

    • Author(s)
      花輪雅史
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
  • [Presentation] FeSe_<1-x>Te_x薄膜の基板歪み効果2010

    • Author(s)
      秋池孝則
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
  • [Presentation] ss型パイロクロア酸化物AOs_2O_6(A=K,Rb,Cs)の95GHz表面インピーダンス測定2010

    • Author(s)
      大場健太郎
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-21
  • [Presentation] BaCo_<0.2>Fe_<1.8>As_2 and Fe(Se,Te)超伝導体におけるTHz電気伝導度2010

    • Author(s)
      前田京剛
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
  • [Presentation] Bi2212微小固有ジョセフソン接合におけるlong接合効果とMQT2010

    • Author(s)
      石川一樹
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
  • [Presentation] Fe(Se,Te)超伝導体の結晶成長と輸送現象2010

    • Author(s)
      小宮世紀
    • Organizer
      日本物理学会第65回年次大会
    • Place of Presentation
      岡山大学
    • Year and Date
      2010-03-20
  • [Presentation] PLD法により各種基板上に作製したFe系11型薄膜の微細構造2010

    • Author(s)
      一瀬中
    • Organizer
      2010年春季 第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2010-03-19
  • [Presentation] Bi系固有ジョセフソン接合における接合形状とスイッチング特性2010

    • Author(s)
      北野晴久
    • Organizer
      2010年春季 第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2010-03-18
  • [Presentation] MgOおよびLaSrAlO_4基板上Fe(Se,Te)薄膜のホール効果2010

    • Author(s)
      塚田一郎
    • Organizer
      2010年春季 第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2010-03-18
  • [Presentation] FeSe_<1-x>Te_x薄膜における超伝導特性の基板依存性2010

    • Author(s)
      今井良宗
    • Organizer
      2010年春季 第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2010-03-18
  • [Presentation] FeSe1-xTex薄膜のホール効果の基板依存性2010

    • Author(s)
      花輪雅史
    • Organizer
      2010年春季 第57回応用物理学関係連合講演会
    • Place of Presentation
      東海大学
    • Year and Date
      2010-03-18
  • [Presentation] Superconducting fluctuation of La_<2-x>Sr_xCuO_4 thin films probed by THz conductivity measurement2010

    • Author(s)
      中村大輔
    • Organizer
      American Physical Society March Meeting 2010
    • Place of Presentation
      Portland, Oregon
    • Year and Date
      2010-03-16
  • [Presentation] THz conductivity of BaCo_<0.2>Fe_<1.8>As_2 and Fe(Se,Te)superconductor2010

    • Author(s)
      前田京剛
    • Organizer
      American Physical Society March Meeting 2010
    • Place of Presentation
      Portland, Oregon, USA
    • Year and Date
      2010-03-16
  • [Presentation] THz conductivity of La_<2-x>Sr_xCuO_4 inthe pseudogap region and in the superconductivity state2009

    • Author(s)
      前田京剛
    • Organizer
      22nd International Symposium on Superconductivity(ISS 2009)
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      20091102-20091104
  • [Presentation] Growth of thin films FeSe_<1-x>Te_x with PbO-type structure by pulsed laser deposition method2009

    • Author(s)
      今井良宗
    • Organizer
      22nd International Symposium on Superconductivity(ISS 2009)
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      20091102-20091104
  • [Presentation] Transient dynamics of driven vortices and superconducting fluctuation of La_<2-x>Sr_xCuO_4 thin films(invited)2009

    • Author(s)
      中村大輔
    • Organizer
      Univ.of Tokyo Symposium, 12th Internaional Workshop on Vortex Matter in Superconductors
    • Place of Presentation
      Lake Yamanaka, Japan
    • Year and Date
      20090912-20090916
  • [Presentation] Growth of thin films FeSe_<1-x>Te_x with PbO-type structure by pulsed laser deposition method2009

    • Author(s)
      今井良宗
    • Organizer
      Univ.of Tokyo Symposium, 12th Internaional Workshop on Vortex Matter in Superconductors
    • Place of Presentation
      Lake Yamanaka, Japan
    • Year and Date
      20090912-20090916
  • [Presentation] Broadband ac conductivity measurement in the mixed state of LSCO : from vortex picture to fluctuation picture2009

    • Author(s)
      田中遼
    • Organizer
      Univ.of Tokyo Symposium, 12th Internaional Workshop on Vortex Matter in Superconductors
    • Place of Presentation
      Lake Yamanaka, Japan
    • Year and Date
      20090912-20090916
  • [Presentation] Electronic states of vortex core in beta-pyrochlore materials2009

    • Author(s)
      大場健太郎
    • Organizer
      Univ.of Tokyo Symposium, 12th Internaional Workshop on Vortex Matter in Superconductors
    • Place of Presentation
      Lake Yamanaka, Japan
    • Year and Date
      20090912-20090916
  • [Presentation] Crossover from Vortex-to fluctuation picture in the vast vortex-liquid state of cuprate superconductors La_<2-x>Sr_xCuO_4 probed by microwave complex conductivity measurement technique2009

    • Author(s)
      前田京剛
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20090907-20090912
  • [Presentation] Growth of thin films FeSe_<1-x>Te_x with PbO-type structure by pulsed laser deposition method2009

    • Author(s)
      花輪雅史
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20090907-20090912
  • [Presentation] Superconducting fluctuation proved by time-domain THz spectroscopy of La_<2-x>Sr_xCuO_4 thin films2009

    • Author(s)
      中村大輔
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20090907-20090912
  • [Presentation] Switching current distribution in underdoped La_<2-x>Sr_xCuO_4 intrinsic Josephson junctions2009

    • Author(s)
      北野晴久
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20090907-20090912
  • [Presentation] Rattling motion in ss-pyrochlore copmpounds explored by the millimeter-wave conductivity measurement2009

    • Author(s)
      前田京剛
    • Organizer
      9th International Conference on Materials and Mechanisms of Superconductivity
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      20090907-20090912
  • [Presentation] Static firction as a function of waiting time probed by dynamics of driven vortices in La_<2-x>Sr_xCuO_4 thin films2009

    • Author(s)
      Y.Shibuya
    • Organizer
      World Tribology Congress 2009
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      20090906-20090911
  • [Presentation] Criteria for the validity of amontons-Coulomb law-study of friction using dynamics of driven vortices of superconductor(invited)2009

    • Author(s)
      前田京剛
    • Organizer
      World Tribology Congress 2009
    • Place of Presentation
      Kyoto, Japan
    • Year and Date
      20090906-20090611
  • [Presentation] Fabrication and switching characteristics for small mesas consisting of a few intrinsic Josephson junctions2009

    • Author(s)
      M.Suzuki
    • Organizer
      Internationl Superconductive Electronics Conference 2009(ISEC 2009)
    • Place of Presentation
      Fukuoka, Japan
    • Year and Date
      20090616-20090619
  • [Presentation] Experimental studies to realize Josephson junction and qubits in cuprate- and Fe-based superconductors(invited)2009

    • Author(s)
      前田京剛
    • Organizer
      7th International Conference on New Theories, Discoveries and Applications of Superconductors and Related Materials(NEW^3 SC)& Zhongguancun International Consortium of R & D of Superconductivity Technology Inaugurating Meeting
    • Place of Presentation
      Beijing, China
    • Year and Date
      20090513-20090516
  • [Presentation] PLD法を用いたFeSe_<1-x>Te_x薄膜の育成2009

    • Author(s)
      今井良宗
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-27
  • [Presentation] ss型パイロクロア酸化物AOs_2O_6 (A=K,Rb,Cs)のマイクロ波表面インピーダンス測定2009

    • Author(s)
      大場健太郎
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-27
  • [Presentation] Bi2212微小固有ジョセフソン接合のスイッチング特性におけるサイズ効果22009

    • Author(s)
      石川一樹
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-27
  • [Presentation] La_<2-x>Sr_xCuO_4薄膜におけるテラヘルツ複素伝導度のドープ量依存性2009

    • Author(s)
      中村大輔
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-26
  • [Presentation] PLD法によるLaFePO薄膜の作製と物性2009

    • Author(s)
      花輪雅史
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-26
  • [Presentation] La_<2-x>Sr_xCuO_4の磁束液体相における複素電気抵抗率の周波数依存性2009

    • Author(s)
      田中遼
    • Organizer
      日本物理学会2009年秋季大会
    • Place of Presentation
      熊本大学
    • Year and Date
      2009-09-26
  • [Presentation] PLD法を用いたFeSe_<1-x>Te_x薄膜の育成2009

    • Author(s)
      田中遼
    • Organizer
      第70回応用物理学会学術講演会
    • Place of Presentation
      富山大学
    • Year and Date
      2009-09-08
  • [Presentation] Proton Tautomerism in the Solid State. Roles of Hydrogen Bonding and Self-association(invited)2009

    • Author(s)
      K.Ogawa
    • Organizer
      19th International Conference on the Chemistry of the Organic Solid State
    • Place of Presentation
      Setri Levante, Italy
    • Year and Date
      2009-06-15
  • [Presentation] Critera for validity of anontons coulomb law-Study of friction using dynamics of driven vortices of superconductors(invited)2009

    • Author(s)
      A. Maeda
    • Organizer
      Interdisciplinary Perspective for Tribology
    • Place of Presentation
      国立オリンピック記念青少年総合センター
    • Year and Date
      2009-05-20
  • [Book] 超伝導ハンドブック(ボルテックスマター)(福山秀敏, 秋光純編)2009

    • Author(s)
      前田京剛
    • Total Pages
      328
    • Publisher
      朝倉書店

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Published: 2011-06-16   Modified: 2016-04-21  

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