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2007 Fiscal Year Annual Research Report

光誘起構造相転移動力学の研究

Research Project

Project/Area Number 19001002
Research InstitutionOsaka University

Principal Investigator

谷村 克己  Osaka University, 産業科学研究所, 教授 (00135328)

Co-Investigator(Kenkyū-buntansha) 那須 圭一郎  大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 教授 (90114595)
吉田 博  大阪大学, 産業科学研究所, 教授 (30133929)
金崎 順一  大阪大学, 産業科学研究所, 准教授 (80204535)
石丸 学  大阪大学, 産業科学研究所, 准教授 (00264086)
楊 金峰  大阪大学, 産業科学研究所, 准教授 (90362631)
Keywords光誘起構造相転移 / フェムト秒時間分解分光 / 時間分解電子線回折 / 走査型トンネル顕微鏡 / 励起状態第一原理分子動力学 / 励起状態動力学 / RFフォトカソード / 電子顕微鏡
Research Abstract

本研究の目的は、光誘起構造相転移動力学の全貌を直接的な構造的知見に基づいて実験的に明らかにすると共に、高度な理論的考察を通じて、その機構を微視的・統一的理解を確立する事である。
研究初年度は、新規装置の導入・開発として、(1)既存のフェムト秒時間分解分光装置(100fsを20fsへ)、フェムト秒時間分解2光子光電子分光装置(160fsを90fsへ)の短パルス化を進めた。一方、(2)本計画の核心の一つとなるフェムト秒時間分解電子線回折装置の設計、および100fsの超短パルス電子線発生を実現する電子銃の製作を終了させた。来年度初期には、世界最高の時間分解能を有する装置を完成させる。また、(3)新規光誘起相の実証のために必要な、温度可変走査型トンネル顕微鏡の導入も終了し、使用可能状態にまで準備を進めた。
現有装置による研究成果として、(1)既存のフェムト秒2光子高電子分光装置を用いたSi結晶中の超高速キャリヤ動力学の解明、(2)フェムト秒反射分光によるグラファイトの超高速キャリヤ動力学の解明をおこない、極めて重要な多くの知見を得た。更に、(3)グラファイト表面における光誘起相転移の実証として、層間結合が生じた場合にのみ発生する光誘起グラフェン偶数層剥離現象を見出した。一方、理論的研究の成果としては、(4)自己相互作用補正を取り入れた局所密度近似法の開発を終了し、励起状態第一原理分子動力学への適用を開始した。また、(5)グラファイトダイヤモンド相転移の断熱ポテンシャル面の性質を種々の理論手法を用いて計算し、ポテンシャル障壁の高さおよび相転移効率を求めた。
来年度は、これらの成果をさらに発展させるとともに、すべての装置開発を早期に終了させて、目的達成にむけた精力的研究を推進する。

  • Research Products

    (55 results)

All 2008 2007

All Journal Article (24 results) (of which Peer Reviewed: 24 results) Presentation (31 results)

  • [Journal Article] Excitation-induced atomic desorption and structural instability of III-V compound semiconductor surfaces2008

    • Author(s)
      K., Tanimura・and J., Kanasaki
    • Journal Title

      Surf. Sci. (in press)

    • Peer Reviewed
  • [Journal Article] Electronic properties and electron dynamics on the Si(001)-(2x1) surface with C-defects2008

    • Author(s)
      S., Tanaka・K., Tanimura
    • Journal Title

      Phys. Rev. B (in press)

    • Peer Reviewed
  • [Journal Article] Scanning tunneling microscopy study on hydrogen removal from Si (001) 2x1: H surface excited with low-energy electron beams2008

    • Author(s)
      J., Kanasaki・K., Ichihashi・K., Tanimura
    • Journal Title

      Surf. Sci. 602 (in press)

    • Peer Reviewed
  • [Journal Article] Multi-fractal analysis of photo-induced cooperative phenomena2008

    • Author(s)
      Kunio, Ishida・Keiichiro, Nasu
    • Journal Title

      J. Phys. C: Condens. Matter 20

      Pages: 025212-1-5

    • Peer Reviewed
  • [Journal Article] Coexistence of localization and itineracy of electrons in boron-doped diamond2008

    • Author(s)
      Jifeng, Yu・Kai, Ji・Chang qin, Wu・Keiichiro, Nasu
    • Journal Title

      Phys. Rev. B 77

      Pages: 045207-1-5

    • Peer Reviewed
  • [Journal Article] Nonlinearity in the dynamics of photoinduced nucleation proces2008

    • Author(s)
      Kunio, Ishida・Keiichiro, Nasu
    • Journal Title

      Phys. Rev. Lett. (in press)

    • Peer Reviewed
  • [Journal Article] Nano-scale sp^2-sp^3 conversion by visible lights irradiation and photoinduced phase transitions,2008

    • Author(s)
      L., Radosinski・K., Nasu・J., Kanazaki・K., Tanimura・A., Radosz・T., Luty
    • Journal Title

      Molecular electronic and related materials-Control and probe with light, eited by T. Naito (in press)

    • Peer Reviewed
  • [Journal Article] Temperature dependence of electron-beam induced effects in amorphous apatite2008

    • Author(s)
      I.-T., Bae・Y., Zhang・W. J., Weber・M., Ishimaru・Y., Hirotsu・M., Higuchi
    • Journal Title

      Nucl. Instr. and Methods, B (in press)

    • Peer Reviewed
  • [Journal Article] Compositional analyses ofion-irradiation-induced phases in d-Sc_4Zr_3O_<12>2008

    • Author(s)
      K. E., Sickafus・M., Ishimaru・Y., Hirotsu・I. O., Usov・J. A., Valdez・P., Hosemann・A. L., Johnson・H. T., Thao
    • Journal Title

      Nucl. Instr. and Methods, B (in press)

    • Peer Reviewed
  • [Journal Article] Dynamic Optical Modulation of Electron Beam on a Photocathode RF Gun toward the Intensity Modulated Radiation Therapy (IMRT)2008

    • Author(s)
      T., Kondoh・H., Kashima・J., Yang・Y., Yoshida・S., Tagawa
    • Journal Title

      Radiat. Phys. Chem. (in press)

    • Peer Reviewed
  • [Journal Article] Identification of the conduction-band photoemission in time-resolved two-photon photoemission spectroscopy of Si surfaces2007

    • Author(s)
      T., Ichibayashi・K., Tanimura
    • Journal Title

      Phys. Rev. B 75

      Pages: 235327-1-6

    • Peer Reviewed
  • [Journal Article] Electronic bond rupture of Si atoms on Si(111)-(2x1) induced by valence excitation2007

    • Author(s)
      E., Inami・K., Tanimura
    • Journal Title

      Phys. Rev. B 76

      Pages: 035311-1-11

    • Peer Reviewed
  • [Journal Article] Fermi-level dependent morphology in photoinduced bond breading on (110)surfaces of III-V semiconductors2007

    • Author(s)
      J., Kanasaki・E., Inami・K., Tanimura
    • Journal Title

      Surf. Sci. 601

      Pages: 2367-2372

    • Peer Reviewed
  • [Journal Article] Coherent dynamics of photo-induced nucleation processes2007

    • Author(s)
      Kunio, Ishida・Keiichiro, Nasu
    • Journal Title

      Phys. Rev. B 76

      Pages: 014302-1-7

    • Peer Reviewed
  • [Journal Article] Sextic anharmonicity and ferroelectric domains in photoexcited SrTiO3 at low temperatures2007

    • Author(s)
      Yu, Qiu・Keiichiro, Nasu・Chang qin, Wu
    • Journal Title

      New J. of Physics 9

      Pages: 320-1-8

    • Peer Reviewed
  • [Journal Article] Nonquasiparticle behavior in momentum-dependent spectral functions of the many-electron Frohlich model2007

    • Author(s)
      H., Zheng・K., Nasu
    • Journal Title

      Phys. Rev. B 75

      Pages: 104301-1-8

    • Peer Reviewed
  • [Journal Article] Ab initio study for site symmetry of phosphorus-doped diamond2007

    • Author(s)
      N., Orita・T., Nishimatsu・H., Katayama-Yoshida
    • Journal Title

      Jpn. J. Appl. Phys. 46

      Pages: 315-317

    • Peer Reviewed
  • [Journal Article] High-pressure properties and phase diagram of boron2007

    • Author(s)
      K., Shirai・A., Masago・H., Katayama-Yoshida
    • Journal Title

      Physica Status Solidi b 244

      Pages: 303-308

    • Peer Reviewed
  • [Journal Article] Ab initio materials design for transparent-conducting-oxide-based new-functional materials2007

    • Author(s)
      H., Katayama-Yoshida・K., Sato・H., Kizaki・H., Funashima・I., Hamada・T., Fukushima・V. A., Dinh・M., Toyoda
    • Journal Title

      Appl. Phys. A 89

      Pages: 19-27

    • Peer Reviewed
  • [Journal Article] Control of impurity diffusion in silicon by IR laser excitation2007

    • Author(s)
      K., Shiral・H., Yamaguchil・H., Katayama-Yoshida^*
    • Journal Title

      J. Phys.: Condens. Matter 19

      Pages: 365207-1-5

    • Peer Reviewed
  • [Journal Article] Ion-beam-induced phase transformations in d-Sc_4Zr_3O_<12>2007

    • Author(s)
      M., Ishimaru・Y., Hirotsu・M., Tang・J. A., Valdez・K. E., Sickafus
    • Journal Title

      J. Appi. Phys. 102

      Pages: 063532-1-7

    • Peer Reviewed
  • [Journal Article] Formation processes of iron silicide nanoparticles studied by ex situ and in situ transmission electron microscopy2007

    • Author(s)
      J. H., Won・A., Kovacs・M., Naito・M., Ishimaru・Y., Hirotsu
    • Journal Title

      J. Appi. Phys. 102

      Pages: 103512-1-7

    • Peer Reviewed
  • [Journal Article] Bunch Length Measurement using Spectral Width of Monochromatic Synchrotron Radiation2007

    • Author(s)
      A., Ogata・T., Kondoh・J., Yang・A., Yoshida・Y., Yoshida
    • Journal Title

      Nucl. lnstr. and Meth. A 578

      Pages: 348-350

    • Peer Reviewed
  • [Journal Article] LWFA of Atto-Second Bunches for Pulse Radiolysis2007

    • Author(s)
      A., Ogata・T., Kondoh・J., Yang・A., Yoshida・Y., Yoshida
    • Journal Title

      Int. J. Modern. Phys. 21

      Pages: 447-458

    • Peer Reviewed
  • [Presentation] 非晶質SiCにおける構造緩和過程の透過電子顕微鏡「その場」観2008

    • Author(s)
      石丸 学、平田秋彦、弘津禎彦
    • Organizer
      日本金属学会平成20年度春期大会
    • Place of Presentation
      東京
    • Year and Date
      20080326-28
  • [Presentation] 照射誘起構造変化の透過電子顕微鏡法による解析 (受賞講演)2008

    • Author(s)
      石丸 学
    • Organizer
      日本金属学会平成20年度春期大会
    • Place of Presentation
      東京
    • Year and Date
      20080326-28
  • [Presentation] Photocathode based Femtosecond Electron Source2008

    • Author(s)
      J., Yang・K., Kan・T., Kondoh・K., Norizawa・Y., Yoshida・K., Tanimura
    • Organizer
      The 11thSANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      20080204-05
  • [Presentation] The Study of Optical Modulation of Electron Beam on a Photocathode RF Gun for Intensity Modulated Radiation Therapy(IMRT)2008

    • Author(s)
      T., Kondoh・H., Kashima・J., Yang・K., Kan・Y., Yoshida・S., Tagawa
    • Organizer
      The 11thSANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      20080204-05
  • [Presentation] Collective Phenomena Induced by Attosecond Electron Bunches2008

    • Author(s)
      A., Ogata・T., Kondoh・J., Yang・Y., Yoshida
    • Organizer
      The 11thSANKEN International Symposium 2007/SANKEN Nanotechnology Symposium/SANKEN MSTEC Symposium
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      20080204-05
  • [Presentation] Promising emulsion-detection technology for ultrafast time-resolved study of structural phase transitions2008

    • Author(s)
      K., Tanimura
    • Organizer
      3rd International Workshop on "Nuclear Emulsion Techniques"
    • Place of Presentation
      Nagoya, Japan
    • Year and Date
      20080124-25
  • [Presentation] フェムト秒時聞分解2光子光電子分光によるキャリヤー動力学I2008

    • Author(s)
      市林 拓、谷村克己
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学 (大阪)
    • Year and Date
      2008-03-24
  • [Presentation] Si(100)-(2x1)表面上のimage-potential共鳴状態 II2008

    • Author(s)
      市林 拓、谷村克己
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学 (大阪)
    • Year and Date
      2008-03-23
  • [Presentation] フェムト秒レーザー光励起によるグラファイト表面原子層の剥離2008

    • Author(s)
      金崎順一、谷村克己、那須圭一郎
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学 (大阪)
    • Year and Date
      2008-03-23
  • [Presentation] フェムト秒レーザー光励起によるグラファイト表面構造変化 IV2008

    • Author(s)
      稲見栄一、金崎順一、谷村克己
    • Organizer
      日本物理学会第63回年次大会
    • Place of Presentation
      近畿大学 (大阪)
    • Year and Date
      2008-03-23
  • [Presentation] Scanning Tunneling Microscopy Study on Hydrogen Removal from Si(001)-(2x1):H Surface Excited with Low-Energy Electron Beams2008

    • Author(s)
      J., Kanasaki・K. Ichihashi・K., Tanimura
    • Organizer
      11th SANKEN International Symposium,
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      2008-02-04
  • [Presentation] Photoinduced structural changes on Si(111)-(7x7)2008

    • Author(s)
      E., Inami・K., Tanimura
    • Organizer
      11th SANKEN International Symposium,
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      2008-02-04
  • [Presentation] Angle- and time-resolved twophoton photoemission spectroscopy on Si(001)-(2x1)2008

    • Author(s)
      S., Tanaka・K., Tanimura
    • Organizer
      11th SANKEN International Symposium,
    • Place of Presentation
      Awaji, Japan
    • Year and Date
      2008-02-04
  • [Presentation] フェムト秒フォトカソードRF電子銃の開発2007

    • Author(s)
      楊金峰、菅晃一、近藤孝文、法澤公寛、吉田陽一、田川精一、谷村克己、浦川順治
    • Organizer
      第5回高周波電子銃研究会
    • Place of Presentation
      東京
    • Year and Date
      20071204-05
  • [Presentation] Novel theoretical approach in photoemission spectroscopy: application to isotope effect and boron-do diamond,2007

    • Author(s)
      J., Kai・Y., Feng・K., Nasu
    • Organizer
      International Symposium on Lattice Effects in Cuprous High Temperature Superconductors
    • Place of Presentation
      Tsukuba, Japan
    • Year and Date
      20071031-1103
  • [Presentation] Structural characterization of ion-beam-induced amorphous silicon carbide by advanced electron microscopy (invited)2007

    • Author(s)
      M., Ishimaru
    • Organizer
      15th International Conference on Surface Modification of Materials by Ion Beams
    • Place of Presentation
      Mumbai, India
    • Year and Date
      20070930-1005
  • [Presentation] 低エミッタンス・フェムト秒電子銃の開発2007

    • Author(s)
      楊金峰、菅晃一、近藤孝文、吉田陽一、浦川順治、法澤公寛
    • Organizer
      日本原子力学会 2007年秋の年会
    • Place of Presentation
      北九州
    • Year and Date
      20070927-29
  • [Presentation] フォトカソードRF電子銃における電子ビームの動的光学制御2007

    • Author(s)
      近藤孝文、加嶋宏章、楊金峰、法澤公寛、吉田陽一、田川精一
    • Organizer
      日本原子力学会 2007年秋の年会
    • Place of Presentation
      北九州
    • Year and Date
      20070927-29
  • [Presentation] Feイオン注Siに形成されたFe-Si準安定相の局所構造解析2007

    • Author(s)
      内藤宗幸、石丸 学、弘津禎彦
    • Organizer
      第68回応用物理学会学術講演会
    • Place of Presentation
      札幌
    • Year and Date
      20070904-08
  • [Presentation] A surprising crystal structure produced by an ion-beam-induced phase transformation in d-Sc_4Zr_3O_<12>2007

    • Author(s)
      K., E., Sickafus・B., P., Uberuaga・C., R., Stanek・M., Ishimaru・Y., Hirotsu, et. al.
    • Organizer
      The 14th International Conference on Radiation Effects in Insulators
    • Place of Presentation
      Caen, France
    • Year and Date
      20070828-0901
  • [Presentation] フェムト秒フォトカソードRF電子銃の開発2007

    • Author(s)
      楊金峰、菅晃一、近藤孝文、吉田陽一、田川精一、浦川順治
    • Organizer
      日本加速器学会
    • Place of Presentation
      和光市
    • Year and Date
      20070801-03
  • [Presentation] パルス圧縮における空間電荷効果とエミッタンスの影響2007

    • Author(s)
      菅晃一、楊金峰、近藤孝文、吉田陽一
    • Organizer
      日本加速器学会
    • Place of Presentation
      和光市
    • Year and Date
      20070801-03
  • [Presentation] Femtosecond Electron Beam Dynamics in Photocathode Accelerator2007

    • Author(s)
      J., Yang・K., Kan・T., Kondoh・Y., Yoshida・S., Tagawa
    • Organizer
      Particle Accelerator Conference 2007
    • Place of Presentation
      Albuquerque, New Mexico
    • Year and Date
      20070625-29
  • [Presentation] Dynamic Optical Modulation of Electron Beam on a Photocathode RF Gun toward the Intensity Modulated Radiation Therapy2007

    • Author(s)
      T., Kondoh・H., Kashima・J., Yang・Y., Yoshida
    • Organizer
      Particle Accelerator Conference 2007
    • Place of Presentation
      Albuquerque, New Mexico
    • Year and Date
      20070625-29
  • [Presentation] Early stage of graphite-diamond structural phase transition induced by charge transfer excitations in the visible region (invited)2007

    • Author(s)
      K., Nasu
    • Organizer
      International conference on, Perspectives and challenges of photo-induced phase transitions
    • Place of Presentation
      Wroclaw, Poland
    • Year and Date
      20070622-24
  • [Presentation] δ-Sc_4Zr_3O_<12>における照射誘起構造変化2007

    • Author(s)
      石丸 学、弘津禎彦、Kurt E., Sickafus
    • Organizer
      日本電子顕微鏡学会第63回学術講演会、
    • Place of Presentation
      新潟
    • Year and Date
      20070520-22
  • [Presentation] Dynamic Optical Modulation of Electron Beam on a Photocathode RF Gun toward the Intensity Modulated Radiation Therapy(IMRT)2007

    • Author(s)
      T., Kondoh・H., Kashima・J., Yang・Yoshida・S., Tagawa
    • Organizer
      The 7th International Symposium on Advanced Science Research-Charged Particle and Photon Interactions with Matter
    • Place of Presentation
      Tokai, Japan
    • Year and Date
      2007-11-07
  • [Presentation] Non-Markovian path-integral theory to avoid the negative sign problem in quantum many-electron systems2007

    • Author(s)
      K., Nasu
    • Organizer
      International seminar in Institute of Physics, Chinese Academy of Science,
    • Place of Presentation
      Beijing, China
    • Year and Date
      2007-10-26
  • [Presentation] Hydrogen removal from Si(001)-2xl:H surface induced by low-energy electron beam excitation2007

    • Author(s)
      K., Ichihashi・J., Kanasaki・K., Tanimura
    • Organizer
      Handai Nanoscience and Nanotechnology International Symposium 2007
    • Place of Presentation
      Osaka, Japan
    • Year and Date
      2007-09-27
  • [Presentation] Si(111)-(7x7)表面キャリヤーダイナミクス2007

    • Author(s)
      市林 拓、谷村克己
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学 (札幌)
    • Year and Date
      2007-09-21
  • [Presentation] Si(100)-(2x1)表面上のimage-potential共鳴状態2007

    • Author(s)
      前野浩介、市林 拓、谷村克己
    • Organizer
      日本物理学会第62回年次大会
    • Place of Presentation
      北海道大学 (札幌)
    • Year and Date
      2007-09-21

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

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