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magnetic polaron effect in photo-induced phase transition of ferromagnets

Research Project

Project/Area Number 24540337
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics I
Research InstitutionUniversity of Fukui (2013-2015)
The Institute of Physical and Chemical Research (2012)

Principal Investigator

Makino Takayuki  福井大学, 工学(系)研究科(研究院), 准教授 (70311363)

Project Period (FY) 2012-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Keywords励起子 / 強磁性体 / スピン / ファラデー効果 / 磁気工学 / 超高速レーザー / 非線形分光 / 強磁性半導体 / スピントロニクス
Outline of Final Research Achievements

The laser-induced ultrafast spin dynamics have been investigated by time-resolved pump-probe and Faraday rotation spectroscopies in ferromagnetic EuO thin films.
We demonstrate that the laser beam can enhance the magnetization on an ultrafast time scale. The decays time for the magnetization enhancement is about 1 nanosecond. In its temperature dependence, there is a maximum slightly below the Curie temperature associated with this dynamical enhancement of magnetization.
It also dominates the demagnetization counterpart at 55 K. It is attributed that this transient collective ordering to the enhancement of the f-d exchange interaction as a result of photoexcitation. We also observed that the circularly polarized light can control the magnetization precession at 10 K. This takes place within the 100-fs duration of a single laser pulse, through combined contribution from two nonthermal photomagnetic effects, i.e., enhancement of the magnetization and an inverse Faraday effect.

Report

(5 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • 2012 Research-status Report
  • Research Products

    (24 results)

All 2016 2014 2013 2012 Other

All Journal Article (7 results) (of which Acknowledgement Compliant: 2 results,  Peer Reviewed: 6 results) Presentation (14 results) (of which Invited: 7 results) Remarks (3 results)

  • [Journal Article] AVRマイコンによる光強度規格化制御システムの構築2016

    • Author(s)
      小林英一、長谷川昂輝、牧野哲征、橋本明弘
    • Journal Title

      福井大学大学院工学研究科研究報告

      Volume: 64 Pages: 83-89

    • Related Report
      2015 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] Magneto-tunable photocurrent in manganite based heterojunctions2014

    • Author(s)
      Z. Sheng, M. Nakamura, W. Koshibae, T. Makino, Y. Tokura, and M. Kawasaki
    • Journal Title

      Nature Communications

      Volume: 5 Issue: 1 Pages: 4584-4584

    • DOI

      10.1038/ncomms5584

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Polarized microscopic laser Raman scattering spectroscopy for edge structure of epitaxial graphene and localized vibrational mode2014

    • Author(s)
      M. Sherajul-Isram, D. Tamagawa, S. Tanaka, T. Makino, A. Hashimoto
    • Journal Title

      Carbon

      Volume: 77 Pages: 1071-1083

    • DOI

      10.1016/j.carbon.2014.06.023

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of boron and nitrogen doping with native point defects on the vibrational properties of graphene2014

    • Author(s)
      M. Sherajul-Isram, K. Ushida, S. Tanaka, T. Makino, A. Hashimoto
    • Journal Title

      Comput. Mater. Sci

      Volume: 94 Pages: 35-43

    • DOI

      10.1016/j.commatsci.2014.01.040

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of vibrational properties of C-doped hexagonal boron nitride (h-BN)2014

    • Author(s)
      M. Sherajul-Isram, K. Ushida, S. Tanaka, T. Makino, A. Hashimoto
    • Journal Title

      Comput. Mater. Sci

      Volume: 94 Pages: 225-233

    • DOI

      10.1016/j.commatsci.2014.04.047

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ultrafast Time-Resolved Faraday Rotation in EuO Thin Films2012

    • Author(s)
      F. Liu, T. Makino, T. Yamasaki, K. Ueno,, A. Tsukazaki, T. Fukumura,, Y. Kong, and M. Kawasaki
    • Journal Title

      Phys. Rev. Lett.

      Volume: 108 Issue: 25 Pages: 2574011-2574015

    • DOI

      10.1103/physrevlett.108.257401

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Ultrafast optical control of magnetization in EuO thin films2012

    • Author(s)
      T. Makino, F. Liu,, T. Yamasaki, Y. Kozuka, K. Ueno,, A. Tsukazaki, T. Fukumura,, Y. Kong, and M. Kawasaki
    • Journal Title

      Phys. Rev. B

      Volume: 86 Issue: 6 Pages: 644031-644034

    • DOI

      10.1103/physrevb.86.064403

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Cl添加によるバンドギャップの揺らぎに対するペロブスカイト太陽電池への影響2016

    • Author(s)
      宮野了一、吉田清孝、伊藤省吾、橋本明弘、牧野哲征
    • Organizer
      第63回応用物理学会春季学術講演会
    • Place of Presentation
      東京工業大学大岡山キャンパス(東京都)
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] time-resolved light-induced Faraday rotation in EuO films2014

    • Author(s)
      T. Makino
    • Organizer
      Nanyang technological university physics and applied physics division seminar
    • Place of Presentation
      南洋理工大学(シンガポール)
    • Year and Date
      2014-11-15
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Time-resolved laser-induced Faraday effect in EuO2014

    • Author(s)
      T. Makino
    • Organizer
      Xian science and technology university researchers seminar
    • Place of Presentation
      西安理工大学(西安、中国)
    • Year and Date
      2014-11-01
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] 広帯域AD変換器による時間分解ポンプ・プローブ信号検出法の改良2014

    • Author(s)
      牧野哲征
    • Organizer
      応用物理学会
    • Place of Presentation
      北海道大学札幌キャンパス(札幌、北海道)
    • Year and Date
      2014-09-01
    • Related Report
      2014 Research-status Report
  • [Presentation] 福井大学工学部電気・電子工学科で実施している学部学生を対象とした実験系科目の紹介2014

    • Author(s)
      T. Makino
    • Organizer
      電気系教員協議会
    • Place of Presentation
      立命館大学草津キャンパス(草津、滋賀県)
    • Year and Date
      2014-08-01
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Time-resolved magnetooptical spectroscopy in EuO thin films2014

    • Author(s)
      T. Makino
    • Organizer
      2014 EMN Summer Meeting
    • Place of Presentation
      Camcun (Camcun, Mexico)
    • Year and Date
      2014-06-03
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Ultrafast laser-induced Faraday rotation in ferromagnetic EuO films2014

    • Author(s)
      T. Makino
    • Organizer
      E-MRS Euromaterial research society spring meeting 2014
    • Place of Presentation
      Congre de Lilles (Lille, France)
    • Year and Date
      2014-06-01
    • Related Report
      2014 Research-status Report
  • [Presentation] Transient Faraday Rotation and Magnetization Precession in EuO2014

    • Author(s)
      T. Makino
    • Organizer
      Oxide-based Materials and Devices V PW14O SPIE OPTO
    • Place of Presentation
      San Francisco, CA, USA
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Ultrafast magnetooptical spectroscopy in EuO thin films2014

    • Author(s)
      T. Makino
    • Organizer
      Advances in the characterization of functional materials under relevant process conditions of the E-MRS 2013 Spring
    • Place of Presentation
      Lille, France
    • Related Report
      2013 Research-status Report
  • [Presentation] Ultrafast magneto-optical control of magnetization in EuO Thin Films2013

    • Author(s)
      T. Makino
    • Organizer
      The 2nd International Congress on Advanced Materials (AM2013)
    • Place of Presentation
      Zhenjiang, JIangsu, China
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Observation of laser-induced magnetization precession in ferromagnetic EuO2013

    • Author(s)
      T. Makino
    • Organizer
      IMS workshop on Advanced Spectroscopy of Correlated Materials (ASCM 13)
    • Place of Presentation
      Okazaki, Aichi, Japan
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] デラフォサイト型CuMO2薄膜(M = Sc, Cr)の励起子物性III2013

    • Author(s)
      牧野哲征,劉富才,平賀広貴,川崎雅司
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学、徳島県
    • Related Report
      2013 Research-status Report
  • [Presentation] マンガン酸化物薄膜における超高速ポンプ・プローブ分光II2013

    • Author(s)
      牧野哲征,盛志高,中村優男,川崎雅司,十倉好紀
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学 東広島キャンパス(広島県)
    • Related Report
      2012 Research-status Report
  • [Presentation] Transient photo-induced transmission in manganite films2012

    • Author(s)
      T. Makino,Z. Sheng,M. Nakamura,M. Kawasaki,Y. Tokura
    • Organizer
      FIRST QS2C Annual Meeting 2012
    • Place of Presentation
      理化学研究所 和光キャンパス (埼玉県)
    • Related Report
      2012 Research-status Report
  • [Remarks] 福井大学牧野研究室のホームページ

    • URL

      http://fuee.u-fukui.ac.jp/~ele/makino/makinoL.html

    • Related Report
      2015 Annual Research Report
  • [Remarks] 福井大学工学部電気エネルギー研究室のホームページ

    • URL

      http://fuee.u-fukui.ac.jp/~ele/makino/makinoL.html

    • Related Report
      2014 Research-status Report
  • [Remarks] 国立大学法人福井大学工学部電気・電子工学科・牧野研究室

    • URL

      http://fuee.u-fukui.ac.jp/~ele/makino/makinoL.html

    • Related Report
      2013 Research-status Report

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Published: 2013-05-31   Modified: 2020-05-15  

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