Atomic-scale structural fluctuation and dynamics of photo-induced phase transition

• Project/Area Number: 20710075
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Nanostructural science
• Research Institution: University of Tsukuba
• Principal Investigator: TERADA Yasuhiko University of Tsukuba, 大学院・数理物質科学研究科, 助教 (20400640)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2009: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2008: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 光誘起相転移 / 構造ゆらぎ / 走査プローブ顕微鏡 / 表面・界面物性 / 金属-絶縁体転移

Research Abstract

The reversible control of metal insulator transition(MIT) in In/Si(111) nanowires is demonstrated by tuning the band filling of the one-dimensional surface state by optical doping. The control of MIT is carried out by regulating the Fermi level in the surface state around the half-filled position, depending on the carrier density introduced at the interface. We successfully achieved the reversible and active control of MIT via the charge doping by regulating the intensity of photoexcitation and electrical field. The dynamical behavior is investigated by femtosecond time-resolved STM. This method is widely applicable to other low-dimensional systems and makes MIT more controllable and suitable for use in nanowires as anactive element in future architectures of nanosized functional devices as well as nanoscale interdevice wiring.

Research Products

• [Journal Article] Laser-combined STM for probing ultrafast transient dynamics (2010)
  • Author(s): Yasuhiko Terada, Shoji Yoshida, Osamu Takeuchi, Hidemi Shigekawa
  • Journal Title: Journal of Physics: Condensed Matter (印刷中)
  • Peer Reviewed
• [Journal Article] Effect of defects buried in pentacene/alkanethiol self-assembled monolayer/Au film on its electronic properties visualized by scanning tunneling microscopy/spectroscopy (2010)
  • Author(s): Yasuhiko Terada, Noriaki Takeuchi, Shoji Yoshida, Atsushi Taninaka, Osamu Takeuchi, Hidemi Shigekawa
  • Journal Title: Jpn. J. Appl. Phys. (印刷中)
  • NAID: 210000069131
  • Peer Reviewed
• [Journal Article] Effect of defects buried in pentacene/alkanethiol self-assembled monolayer/Au film on its electronic properties visualized by scanning tunneling microscopy/spectroscopy (2010)
  • Author(s): 寺田康彦
  • Journal Title: Japanese Journal of Applied Physics (掲載確定)
  • NAID: 210000069131
  • Peer Reviewed
• [Journal Article] Laser-combined STM for probing ultrafast transient dynamics (2010)
  • Author(s): 寺田康彦
  • Journal Title: Journal of Physics : Condensed Matter 22(印刷中)
  • Peer Reviewed
• [Journal Article] Optical doping: active control of metal-insulator transition in nanowire (2008)
  • Author(s): Yasuhiko Terada, Shoji Yoshida, Atsushi Okubo, Ken Kanazawa, Maojie Xu, Osamu Takeuchi, Hidemi Shigekawa
  • Journal Title: Nano Lett. 8(11) Pages: 3577-3581
  • Peer Reviewed
• [Journal Article] Optical doping : active control of metal-insulator transition in nanowire (2008)
  • Author(s): 寺田康彦
  • Journal Title: Nano letters 8 Pages: 3577-3581
  • Peer Reviewed
• [Presentation] レーザー励起STMによる局所分光 (2010)
  • Author(s): 寺田康彦
  • Organizer: 第57回応用物理学関係連合講演会シンポジウム:ナノスケール分光法による顕微評価・解析技術の最前線
  • Place of Presentation: 東海大学湘南キャンパス
  • Year and Date: 2010-03-17
• [Presentation] レーザー励起STMによる局所分光、シンポジウム:ナノスケール分光法による顕微評価・解析技術の最前線 (2010)
  • Author(s): 寺田康彦、吉田昭二、武内修、重川秀実
  • Organizer: 第57回応用物理学関係連合講演会
  • Place of Presentation: 東海大学湘南キャンパス
• [Presentation] Femtosecond time-resolved scanning tunneling microscopy (2009)
  • Author(s): Yasuhiko Terada, Osamu Takeuchi, Hidemi Shigekawa
  • Organizer: 理研シンポジウム/RIKEN Symposium第1回ナノ分光部会シンポジウム
  • Place of Presentation: 理化学研究所
  • Year and Date: 2009-11-06
• [Presentation] Femtosecond time-resolved scanning tunneling microscopy (2009)
  • Author(s): 寺田康彦
  • Organizer: 理研シンポジウム第1回ナノ分光部会シンポジウム
  • Place of Presentation: 理化学研究所(和光)研究交流棟3階会議室
  • Year and Date: 2009-11-06
• [Presentation] Nanoscale visualization of carrier dynamics in semiconductors by femtosecond time-resolved STM (2009)
  • Author(s): Yasuhiko Terada, Shoji Yoshida, Munenori Yokota, Atsushi Okubo, Osamu Takeuchi, Hidemi Shigekawa
  • Organizer: 11th International Conference on Electronic Spectroscopy and Structure(ICESS-11)
  • Place of Presentation: 奈良県新公会堂
  • Year and Date: 2009-10-06
• [Presentation] Nanoscale visualization of carrier dynamics in semiconductors by femtosecond time-resolved STM (2009)
  • Author(s): 寺田康彦
  • Organizer: 11th International Conference on Electronic Spect roscopy and Structure(ICESS-11)
  • Place of Presentation: 奈良県新公会堂
  • Year and Date: 2009-10-06
• [Presentation] フェトム秒時間分解走査プローブ顕微鏡技術の開拓と極限計測 ―極微世界の高速現象をプローブ顕微鏡で探る― (2009)
  • Author(s): 寺田康彦
  • Organizer: 第47回2009分析展
  • Place of Presentation: 幕張メッセ国際展示場
  • Year and Date: 2009-09-02
• [Presentation] 時間分解STM信号の物理起源と空間分解能 (2009)
  • Author(s): 寺田康彦、吉田昭二、大久保淳史、横田統徳、武内修、重川秀実
  • Organizer: 第70回応用物理学会学術講演会
  • Place of Presentation: 富山大学
• [Presentation] フェトム秒時間分解走査プローブ顕微鏡技術の開拓と極限計測-極微世界の高速現象をプローブ顕微鏡で探る- (2009)
  • Author(s): 寺田康彦、吉田昭二、重川秀実
  • Organizer: 第47回2009分析展
  • Place of Presentation: 幕張メッセ国際展示場
• [Presentation] Novel control of metal-insulator transition in nanowire by optical doping (2008)
  • Author(s): 寺田康彦
  • Organizer: The 16th International Colloquium on Scanning Probe Microscouv (ICSPM16)
  • Place of Presentation: 熱川ハイツ(静岡県)
  • Year and Date: 2008-12-12
• [Presentation] Optical Control of Metal-Insulator Phase Transition in In/Si(111)Nanowire (2008)
  • Author(s): 大久保淳史
  • Organizer: 表面科学とナノテクノロジーに関する国際シンポジウム(ISSS-5)
  • Place of Presentation: 早稲田大学国際会議場
  • Year and Date: 2008-11-11
• [Presentation] Optical control of metal-insulator transition in nanowire (2008)
  • Author(s): 寺田康彦
  • Organizer: 第4回真空・表面科学アジアオーストラリア会議 (VASSCAA-4)
  • Place of Presentation: くにびきメッセ(松江市)
  • Year and Date: 2008-10-29
• [Presentation] In-Si(111)ナノワイヤー金属絶縁体転移の光制御 (2008)
  • Author(s): 大久保淳史
  • Organizer: 2008年秋季第69回応用物理学会学術講演会
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-05
• [Presentation] Novel control of metal-insulator transition in nanowire by optical doping (2008)
  • Author(s): Yasuhiko Terada, Shoji Yoshida, Atsushi Okubo, Osamu Takeuchi, Hidemi Shigekawa
  • Organizer: The 16th International Colloquium on Scanning Probe Microscopy(ICSPM16)
  • Place of Presentation: Atagawa Heights, Shizuoka
• [Presentation] Optical Control of Metal-Insulator Phase Transition in In/Si(111) Nanowire (2008)
  • Author(s): Atsushi Okubo, Yasuhiko Terada, Shoji Yoshida, Maojie Xu, Osamu Takeuchi, Hidemi Shigekawa
  • Organizer: 表面科学とナノテクノロジ-に関する国際シンポジウム(ISSS-5)
  • Place of Presentation: 早稲田大学国際会議場
• [Presentation] Optical control of metal-insulator transition in nanowire (2008)
  • Author(s): Yasuhiko Terada, Shoji Yoshida, Atsushi Okubo, Maojie Xu, Osamu Takeuchi, Hidemi Shigekawa
  • Organizer: 第4回真空・表面科学アジア・オーストラリア会議(VASSCAA-4)
  • Place of Presentation: くにびきメッセ
• [Presentation] In/Si(111)ナノワイヤー金属絶縁体転移の光制御 (2008)
  • Author(s): 大久保淳史, 寺田康彦, 吉田昭二, 武内修, 重川秀実
  • Organizer: 第69回応用物理学会学術講演会
  • Place of Presentation: 中部大学
• [Remarks]
  • URL: http://dora.bk.tsukuba.ac.jp/