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The dynamics of orbital-ordering domain wall in orbital ordered systems

Research Project

Project/Area Number 23840010
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

FUJIOKA Jun  東京大学, 大学院・工学系研究科, 助教 (80609488)

Project Period (FY) 2011 – 2012
Project Status Completed (Fiscal Year 2012)
Budget Amount *help
¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords物性実験 / 強相関電子系 / 強相関エレクトロニクス / 低温物性 / 軌道秩序
Research Abstract

We have studied the domain wall (DW) dynamics of orbital order for the correlated electron systems. Specifically, we investigated the broad-band dielectric spectra for the layered Mn-oxides with K2NiF4 structure and perovskite-type vanadates and identified the novel excitation associated with the motion of domain wall. For perovskite vanadates, the anisotropic dielectric dispersion is observed despite of the nearly isotropic crystal structure, indicating that the DW dynamics reflects the 1D-nature of the orbital exchange interaction coupled to the magnetic ordering.

Report

(3 results)
  • 2012 Annual Research Report   Final Research Report ( PDF )
  • 2011 Annual Research Report
  • Research Products

    (16 results)

All 2012 2011 Other

All Journal Article (12 results) (of which Peer Reviewed: 7 results) Presentation (3 results) (of which Invited: 1 results) Remarks (1 results)

  • [Journal Article] Variation of charge dynamics upon the helimagnetic and metal-insulator transitions for perovskite AFeO3 (A = Sr and Ca)2012

    • Author(s)
      J. Fujioka, S Ishiwata, Y. Kaneko, Y.Taguchi and Y. Tokura
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 85 Pages: 155141-1

    • Related Report
      2012 Final Research Report
  • [Journal Article] Soft phonon mode coupled with antiferromagnetic order in incipient-ferroelectric Mott insulators2012

    • Author(s)
      H. Sakai, J. Fujioka, T. Fukuda, M. S.Bahramy, D. Okuyama, R. Arita, T. Arima,A. Q. R. Baron, Y. Taguchi, and Y. Tokura,
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 86 Pages: 104407-1

    • Related Report
      2012 Final Research Report
  • [Journal Article] Ferroelectricity and Pressure-InducedPhenomena Driven by Neutral Ionic ValenceInstability of Acid-Base Supramolecules2012

    • Author(s)
      Reiji Kumai, Sachio Horiuchi, JunFujioka, and Yoshinori Tokura
    • Journal Title

      Journal of The American chemical society

      Volume: 134 Pages: 1036-1036

    • Related Report
      2012 Final Research Report
  • [Journal Article] Photocarrier collection from depletion layer of LaMnO2012

    • Author(s)
      J. Fujioka, M. Nakamura, M. Kawasaki,and Y. Tokura
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Pages: 16107-16107

    • Related Report
      2012 Final Research Report
  • [Journal Article] Variation of charge dynamics upon the helimagnetic and metal-insulator transitions for perovskite AFeO3 (A = Sr and Ca)2012

    • Author(s)
      J. Fujioka, S. Ishiwata, Y. Kaneko, Y. Taguchi, and Y. Tokura
    • Journal Title

      Phys. Rev. B

      Volume: 85 Issue: 15 Pages: 1551411-5

    • DOI

      10.1103/physrevb.85.155141

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Soft phonon mode coupled with antiferromagnetic order in incipient-ferroelectric Mott insulators Sr1-xBaxMnO32012

    • Author(s)
      (H. Sakai), J. Fujioka, T. Fukuda, M. S. Bahramy, D. Okuyama, R. Arita, T. Arima, A. Q. R. Baron, Y. Taguchi, and Y. Tokura
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 86 Issue: 10 Pages: 1044071-11

    • DOI

      10.1103/physrevb.86.104407

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variation of Charge Dynamics in the Course of Metal-Insulator Transition for Pyrochlore-Type Nd2Ir2O72012

    • Author(s)
      (K. Ueda), J. Fujioka, Y. Takahashi, T. Suzuki, S. Ishiwata, Y. Taguchi and Y. Tokura
    • Journal Title

      PHYSICAL REVIEW LETTERS

      Volume: 109 Issue: 13 Pages: 136402-136402

    • DOI

      10.1103/physrevlett.109.136402

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ferroelectricity and Pressure-Induced Phenomena Driven by Neutral Ionic Valence Instability of Acid-Base Supramolecules2012

    • Author(s)
      R. Kumai, S. Horiuchi, J. Fujioka, Y. Tokura
    • Journal Title

      J. Am. Chem. Soc

      Volume: 134 Issue: 2 Pages: 1036-1046

    • DOI

      10.1021/ja208113p

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photocarrier collection from depletion layer of LaMnO_32012

    • Author(s)
      J.Fujioka, M.Nakamura, M.Kawasaki, Y.Tokura
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Issue: 1

    • DOI

      10.1063/1.3677790

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Variation of Charge Dynamics in the Course of Metal-Insulator Transition for Pyrochlore-Type Nd2011

    • Author(s)
      K. Ueda, J. Fujioka, Y. Takahashi, T.Suzuki, S. Ishiwata, Y. Taguchi and Y.Tokura
    • Journal Title

      PHYSICAL REVIEW LETTERS

      Volume: 109 Pages: 136402-1

    • Related Report
      2012 Final Research Report
  • [Journal Article] Displacement-Type Ferroelectricity with Off-Center Magnetic Ions in Perovskite Sr1-xBaxMnO32011

    • Author(s)
      H.Sakai
    • Journal Title

      Phys.Rev.Lett

      Volume: 107, (No.13) Issue: 13

    • DOI

      10.1103/physrevlett.107.137601

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric response in the incoherent transport region near Mott transition : the case study of La1-xSrxVO32011

    • Author(s)
      M.Uchida, et al
    • Journal Title

      Physical Review B

      Volume: 83 Issue: 16 Pages: 1651271-5

    • DOI

      10.1103/physrevb.83.165127

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Presentation] LaMnO_3_/Nb:SrTiO_3_ヘテロ接合における光電流の外部電場制御2012

    • Author(s)
      藤岡淳
    • Organizer
      日本物理学会第67年次大会
    • Place of Presentation
      関西学院大学
    • Year and Date
      2012-03-24
    • Related Report
      2011 Annual Research Report
  • [Presentation] Variation of Charge Dynamics in the course of Metal-Insulator Transition for Pyrochlore-type Nd2Ir2O2012

    • Author(s)
      J. Fujioka, K. Ueda, Y. Takahashi, T.Suzuki, S. Ishiwata, Y. Taguchi and Y.Tokura
    • Organizer
      Mott physics beyond the Heisenberg model
    • Place of Presentation
      Lousanne
    • Related Report
      2012 Final Research Report
  • [Presentation] Variation of Charge Dynamics in the course of Metal-Insulator Transition for Pyrochlore-type Nd2Ir2O72012

    • Author(s)
      J. Fujioka
    • Organizer
      Mott physics beyond the Heisenberg model
    • Place of Presentation
      EPFL(スイス)
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Remarks]

    • URL

      http://www.cmr.t.u-tokyo.ac.jp/

    • Related Report
      2012 Final Research Report

URL: 

Published: 2011-09-05   Modified: 2020-05-15  

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