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2008 Fiscal Year Final Research Report

Creation of novel state of matter by ultrafast collective photo-excitation

Research Project

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Project/Area Number 16076207
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Review Section Science and Engineering
Research InstitutionThe University of Tokyo

Principal Investigator

MIYANO Kenjiro  The University of Tokyo, 先端科学技術研究センター, 教授 (90167677)

Co-Investigator(Kenkyū-buntansha) OKAMOTO Hiroshi  東京大学, 新領域創成科学研究科, 教授 (40201991)
TANAKA Koichiro  京都大学, 物質-細胞統合システム拠点, 教授 (90212034)
ARIMA Takahisa  東北大学, 多元物質科学研究所 (90232066)
Project Period (FY) 2004 – 2008
Keywords強相関電子系 / 光誘起相転移 / 金属・絶縁体転移 / 電気・磁気効果 / 交差相関 / マルチフェロイックス / 超高速ポンプ・プローブ分光
Research Abstract

物質内の電子が、個々に運動するよりも全体的な運動をする方が容易である特異な性質を持った一群の物質があり、これを強相関電子系と呼ぶ。これらは、僅かの外部刺激によって著しい性質の変化を示す事が知られている。このような物質にレーザー光を照射し、その後の変化を光学的、電気・磁気的、構造的に追跡することによって、光照射に特有の非常に高速な性質の変化があることを見出した。また、裏表見る方向で光の透過率が異なるなど、通常の物質には見られない性質を持った材料を開発した。

  • Research Products

    (27 results)

All 2008 2007 2006 2005 Other

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (9 results) Book (2 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Photoinduced metal-insulator transition in a manganite thin film2008

    • Author(s)
      N. Takubo, K. Miyano
    • Journal Title

      Phys. Rev. Lett. 101

      Pages: 177403

    • Peer Reviewed
  • [Journal Article] Ultrafast charge density dynamics in one-dimensional Mott insulators2008

    • Author(s)
      H. Uemura, H. Matsuzaki, Y. Takahashi, T. Hasegawa, H. Okamoto
    • Journal Title

      J. Phys. Soc. Jpn. 77

      Pages: 113714

    • Peer Reviewed
  • [Journal Article] Magnetic control of crystal chirality and the existence of a large magneto-optical dichroism effect in CuB_2O_42008

    • Author(s)
      M. Saito, K. Ishikawa, K. Taniguchi, T. Arima
    • Journal Title

      Phys. Rev. Lett. 101

      Pages: 117402

    • Peer Reviewed
  • [Journal Article] Lightinduced excited spin state trapping in the binuclear spin crossover compound [Fe (bpym) (NCS)_2]_2 (bpym) exhibiting a high-spin ground state2008

    • Author(s)
      S. Mouri, O. Moussa, G. Molnar, J. A. Real, A. B. Gaspar, A. Bousseksou, K. Tanaka
    • Journal Title

      Chem. Phys. Lett. 456

      Pages: 215

    • Peer Reviewed
  • [Journal Article] Polarization reversal in multiferroic TbMnO_3 with a rotating magnetic field direction2007

    • Author(s)
      N. Abe, K. Taniguchi, S. Ohtani, T. Takenobu, Y. Iwasa, T. Arima
    • Journal Title

      Phys. Rev. Lett. 99

      Pages: 227206

    • Peer Reviewed
  • [Journal Article] Ultrafast photoinduced insulator-ferromagnetic transition in the perovskite manganite Gd_<0.55>Sr_<0.45>MnO_32007

    • Author(s)
      M. Matsubara, Y. Okimoto, T. Ogasawara, Y. Tomioka, H. Okamoto, Y. Tokura
    • Journal Title

      Phys. Rev. Lett. 99

      Pages: 207401

    • Peer Reviewed
  • [Journal Article] Photoinduced metallic state mediated by spin-charge separation in a one-demensional organic Mott insulator2007

    • Author(s)
      H. Okamoto, H. Matsuzaki, T. Wakabayashi, Y. Takahashi, T. Hasegawa
    • Journal Title

      Phys. Rev. Lett. 98

      Pages: 037401

    • Peer Reviewed
  • [Journal Article] Ultrafast photoconversion from charge density wave state to Mott-Hubbard state in one-dimensional extended Peierls-Hubbard system of Brbridged Pd compound2006

    • Author(s)
      H. Matsuzaki, M. Yamashita, H. Okamoto
    • Journal Title

      J. Phys. Soc. Jpn. 75

      Pages: 123701

    • Peer Reviewed
  • [Journal Article] Intrinsic colossal magnetoresistance effect in thin-film Pr_<0.5>Sr_<0.5>MnO_3 through dimensionality switching2006

    • Author(s)
      Y. Uozu, Y. Wakabayashi, Y. Ogimoto, N. Takubo, H. Tamaru, N. Nagaosa, K. Miyano
    • Journal Title

      Phys. Rev. Lett. 97

      Pages: 037202

    • Peer Reviewed
  • [Journal Article] Ferroelectric polarization flow in a frustrated magnet MnWO4 induced by a magnetic field2006

    • Author(s)
      K. Taniguchi, N. Abe, T. Takenobu, Y. Iwasa, T. Arima
    • Journal Title

      Phys. Rev. Lett. 97

      Pages: 097203

    • Peer Reviewed
  • [Journal Article] Ultrafast photoinduced melting of a spin-Peierls phase in an organice charge-transfer compound, K-tetracyanoquinodimethane2006

    • Author(s)
      H. Okamoto, K. Ikegami, T. Wakabayashi, Y. Ishige, J. Togo, H. Kishida, H. Matsuzaki
    • Journal Title

      Phys. Rev. Lett. 96

      Pages: 037405

    • Peer Reviewed
  • [Journal Article] Persistent and reversible all-optical phase control in a manganite thin film2005

    • Author(s)
      N. Takubo, Y. Ogimoto, M. Nakamura, H. Tamaru, M. Izumi, K. Miyano
    • Journal Title

      Phys. Rev. Lett. 95

      Pages: 017404

    • Peer Reviewed
  • [Journal Article] Direct observation of the soft-mode dispersion in incipient ferroelectric KTaO_32005

    • Author(s)
      Y. Ichikawa, M. Nagai, K. Tanaka
    • Journal Title

      Phys. Rev. B71

      Pages: 086509

    • Peer Reviewed
  • [Presentation] Ultrafast dynamics of photoinduced phase transitions in correlated electron oxides2008

    • Author(s)
      H. Okamoto
    • Organizer
      3rd International Conference on Photo-Induced Phase Transitions and Cooperative Phenomena
    • Place of Presentation
      Osaka
    • Year and Date
      20081111-15
  • [Presentation] Bidirectional and persistent photoinduced phase change in manganite thin films2008

    • Author(s)
      K. Miyano
    • Organizer
      3rd International Conference on Photo-Induced Phase Transitions and Cooperative Phenomena
    • Place of Presentation
      Osaka
    • Year and Date
      20081111-15
  • [Presentation] Ultrafast photoinduced phase transitions in charge transfer compounds : Insulator-metal transition and neutral-ionic transition2008

    • Author(s)
      H. Okamoto
    • Organizer
      International Symposium on Molecular Conductors 2008, Novel Functions of Molecular Conductors under Extreme Conditions Scientific Research on Priority Areas
    • Place of Presentation
      Okazaki, Japan
    • Year and Date
      20080723-25
  • [Presentation] Neutron and X-ray Diffraction Studies on Spin-driven Ferroelectrics2008

    • Author(s)
      T. Arima
    • Organizer
      The 7th International Workshop on Polaried Neutrons in Condensed Matter Investigations
    • Place of Presentation
      Tokai
    • Year and Date
      2008-09-02
  • [Presentation] Diffraction Studies of Relation between Helicity of Cycloid Magnetism and Ferroelectric Polarization in Multiferroic Manganese Oxides2007

    • Author(s)
      T. Arima, H. Sagayama, N. Abe, K. Taniguchi, H. Ohsumi, M. Matsuura, K. Hirota, D. Okuyama, Y. Yamasaki, Y. Tokura
    • Organizer
      The 8th Conference of the Asian Crystallographic Association
    • Place of Presentation
      Taipei
    • Year and Date
      2007-11-05
  • [Presentation] Nonreciprocal Directional Dichroism and Related X-ray Magnetoelectric Phenomena2007

    • Author(s)
      T. Arima
    • Organizer
      T. Gordon Research Conference on X-ray Physics
    • Place of Presentation
      New London
    • Year and Date
      2007-08-07
  • [Presentation] THz attenuated total reflection spectroscopy2006

    • Author(s)
      K. Tanaka
    • Organizer
      CLEO/QELS and PhAST CMCC1
    • Place of Presentation
      Long Beach
    • Year and Date
      20060521-26
  • [Presentation] Bidirectional optical phase control between a charge-ordered insulator and a metal in manganite thin films2005

    • Author(s)
      K. Miyano, N. Takubo
    • Organizer
      ECRYS-2005
    • Place of Presentation
      Cargese
    • Year and Date
      20050821,20050827
  • [Presentation] Optical Magnetoelectric Effects in Multiferroics2005

    • Author(s)
      T. Arima, Y. Tokura
    • Organizer
      2005 American Physical Society March Meeting
    • Place of Presentation
      Los Angels
    • Year and Date
      2005-03-23
  • [Book] 金属錯体の現代物性化学 第4章2008

    • Author(s)
      岡本博
    • Total Pages
      227-250
    • Publisher
      三共出版
  • [Book] テラヘルツ技術総覧2007

    • Author(s)
      田中耕一郎(副編集委員長)
    • Publisher
      NGT出版
  • [Remarks] 宮野

    • URL

      http://www.myn.rcast.u-tokyo.ac.jp

  • [Remarks] 岡本

    • URL

      http://pete.k.u-tokyo.ac.jp/

  • [Patent(Industrial Property Rights)] 基板回転機構2006

    • Inventor(s)
      宮野健次郎
    • Industrial Property Rights Holder
      株式会社東大TLO
    • Industrial Property Number
      特願2006-343746
    • Filing Date
      2006-12-21

URL: 

Published: 2010-06-10   Modified: 2016-04-21  

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