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Thoretical Study on Quantum Domain Walls in Ferroelectrics

Research Project

Project/Area Number 22740214
Research Category

Grant-in-Aid for Young Scientists (B)

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

Principal Investigator

MOCHIZUKI Masahito  東京大学, 大学院・工学系研究科, 特任講師 (80450419)

Project Period (FY) 2010 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2010: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords強相関系 / 磁性強誘電体 / マルチフェロイックス / ドメインウォール / 非線形ダイナミクス
Research Abstract

I have completely clarified the magnetoelectric phase diagram of the multiferroic Mn perovskites through constructing their microscopic spin model and analyzing it using Monte-Carlo method for the first time in the world. I have also elucidated their phase diagrams in magnetic fields, a mechanism of the field-induced electric transition, and a mechanism of the electromagnon excitations activated by oscillating electric-field component of light in the study on magnetoelectric cross-correlation responses of this class of materials. Also I have predicted the optical switching of spin chirality via the intense electromagnon excitations, and have clarified the chirality reversal and flop processes accompanied by characteristic spatial-pattern formations with dynamical chirality-domain stripes.

Report

(3 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • Research Products

    (36 results)

All 2012 2011 2010 Other

All Journal Article (16 results) (of which Peer Reviewed: 13 results) Presentation (18 results) Remarks (2 results)

  • [Journal Article] Spin-Wave Modes and Their Intense Excitation Effects in Skyrmion Crystals2012

    • Author(s)
      望月維人
    • Journal Title

      Physical Review Letters

      Volume: Vol.108 Issue: 1

    • DOI

      10.1103/physrevlett.108.017601

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Origin of the Large Polarization in Multiferroic YMnO_3 Thin Films Revealed by Soft- and Hard-X-Ray Diffraction2012

    • Author(s)
      H.Wadati
    • Journal Title

      Phys.Rev.Lett.

      Volume: 108 Issue: 4 Pages: 47203-47203

    • DOI

      10.1103/physrevlett.108.047203

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Hall effect of spin-chirality origin in a triangular-lattice helimagnet Fe_<1.3>Sb2012

    • Author(s)
      Y.Shiomi, M.Mochizuki, Y.Kaneko, Y.Tokura
    • Journal Title

      Physical Review Letter

      Volume: 108 Issue: 5 Pages: 56601-56601

    • DOI

      10.1103/physrevlett.108.056601

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of spin-phonon coupling in multiferroic manganese perovskites RMnO (3)2011

    • Author(s)
      M.Mochizuki, N.Furukawa, N.Nagaosa
    • Journal Title

      Phys.Rev.B.

      Volume: 84 Issue: 14

    • DOI

      10.1103/physrevb.84.144409

    • Related Report
      2011 Annual Research Report 2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] マルチフェロイックスにおけるエレクトロマグノン励起2011

    • Author(s)
      望月維人、古川信夫、永長直人
    • Journal Title

      日本物理学会誌

      Volume: Vol.66、No.4 Pages: 280-284

    • Related Report
      2011 Final Research Report
  • [Journal Article] Magnetic Field Induced Dehybridization of the Electromagnons in Multiferroic TbMnO_32011

    • Author(s)
      P.Rovillain, 望月維人, 他
    • Journal Title

      Physical Review Letters

      Volume: 107 Issue: 2

    • DOI

      10.1103/physrevlett.107.027202

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical Simulation of Spin-Chirality Switching in Multiferroics via Intense Electromagnon Excitations2011

    • Author(s)
      望月維人, 永長直人
    • Journal Title

      Journal of Physics : Conference Series

      Volume: 320 Pages: 012082-012082

    • DOI

      10.1088/1742-6596/320/1/012082

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] マルチフェロイック希土類Mnペロフスカイトにおける電気磁気現象の理論2011

    • Author(s)
      望月維人
    • Journal Title

      固体物理

      Volume: 46 Pages: 55-73

    • NAID

      40018737729

    • Related Report
      2010 Annual Research Report
  • [Journal Article] マルチフェロイックスにおけるエレクトロマグノン励起2011

    • Author(s)
      望月維人
    • Journal Title

      日本物理学会誌

      Volume: 2011年4月号(掲載決定)

    • Related Report
      2010 Annual Research Report
  • [Journal Article] Theory of Magnetic Switching of Ferro electricity in Spiral Magnets2010

    • Author(s)
      望月維人、古川信夫
    • Journal Title

      Physical Review Letters

      Volume: Vol.105 Issue: 18

    • DOI

      10.1103/physrevlett.105.187601

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Theoretically Predicted Picosecond Optical Switching of Spin Chirality in Multiferroics2010

    • Author(s)
      望月維人、永長直人
    • Journal Title

      Physical Review Letters

      Volume: Vol.105 Issue: 14

    • DOI

      10.1103/physrevlett.105.147202

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Theory of the Thermal Hall Effect in Quantum Magnets2010

    • Author(s)
      H. Katsura, N. Nagaosa and P. A. Lee
    • Journal Title

      Phys. Rev. Lett.

      Volume: 104 Issue: 17 Pages: 1-4

    • DOI

      10.1103/physrevlett.104.177206

    • Related Report
      2011 Final Research Report
    • Peer Reviewed
  • [Journal Article] Theory of Electromagnons in the Multiferroic Mn Perovskites : The Vital Role of Higher Harmonic Components of the Spiral Spin Order2010

    • Author(s)
      望月維人
    • Journal Title

      Physical Review Letters

      Volume: 105

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin Model of Magnetostrictions in Multiferroic Mn Perovskites2010

    • Author(s)
      望月維人
    • Journal Title

      Physical Review Letters

      Volume: 105

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theoretically Predicted Picosecond Optical Switching of Spin Chirality in Multiferroics2010

    • Author(s)
      望月維人
    • Journal Title

      Physical Review Letters

      Volume: 105

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Theory of Magnetic Switching of Ferroelectricity in Spiral Magnets2010

    • Author(s)
      望月維人
    • Journal Title

      Physical Review Letters

      Volume: 104

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] スカーミオン結晶相のマグノンモード、円偏光依存性と強励起効果2012

    • Author(s)
      望月維人
    • Organizer
      日本物理学会第67回年次大会
    • Place of Presentation
      関西学院大学西宮上ケ原キャンパス(兵庫県)
    • Year and Date
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] マルチフェロイックスにおけるエレクトロマグノン励起とスピンカイラリティの光スイッチ現象2012

    • Author(s)
      望月維人
    • Organizer
      テラヘルツテクノロジーフォーラム平成23年度第2回技術検討会
    • Place of Presentation
      東京大学本郷キャンパス(東京都)(招待講演)
    • Year and Date
      2012-03-21
    • Related Report
      2011 Annual Research Report
  • [Presentation] Collective Spin Dynamics and Its Intense-Excitation Effects in Skyrmion Crystals2012

    • Author(s)
      望月維人
    • Organizer
      2012 FIRST QS^2C Theory Forum "RIKEN-APW-APCTP Joint Workshop"
    • Place of Presentation
      理化学研究所(埼玉県)
    • Year and Date
      2012-01-14
    • Related Report
      2011 Annual Research Report
  • [Presentation] Dynamical Magnetoelectric Phenomena in the Multiferroic Mn Perovskites2011

    • Author(s)
      望月維人
    • Organizer
      2011 APS March Meeting
    • Place of Presentation
      アメリカ合衆国テキサス州ダラスコンベンションセンター
    • Year and Date
      2011-03-21
    • Related Report
      2011 Final Research Report
  • [Presentation] Dynamical Magnetoelectric Phenomena in the Multiferroic Mn Perovskites2011

    • Author(s)
      望月維人
    • Organizer
      2011 APS March Meeting
    • Place of Presentation
      Dallas, Texasアメリカ
    • Year and Date
      2011-03-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] スピン系の時間発展方程式(Landau-Lifshitz-Gilbert方程式)の数値計算ソフトウェアの開発と応用2011

    • Author(s)
      望月維人
    • Organizer
      次世代スーパーコンピュータプロジェクトナノ分野グランドチャレンジ研究開発 第5回公開シンポジウム
    • Place of Presentation
      甲南大学ポートアイランドキャンパス
    • Year and Date
      2011-02-22
    • Related Report
      2010 Annual Research Report
  • [Presentation] スパイラル磁性体におけるスピンカイラリティの光スイッチの理論2011

    • Author(s)
      望月維人
    • Organizer
      KEK研究会「固体光誘起状態の非平衡ダイナミックス理論とその今後の展望」
    • Place of Presentation
      つくば市高エネルギー加速器研究機構
    • Year and Date
      2011-02-16
    • Related Report
      2010 Annual Research Report
  • [Presentation] Dynamical Magnetoelectric Phenomena in the Multiferroic Mn Perovskites2011

    • Author(s)
      望月維人
    • Organizer
      International Conference on Frustration in Condensed Matter
    • Place of Presentation
      仙台国際センター
    • Year and Date
      2011-01-11
    • Related Report
      2010 Annual Research Report
  • [Presentation] マルチフェロイックRMnO3のエレクトロマグノン励起の理論2011

    • Author(s)
      望月維人
    • Organizer
      物性研・CMSI・次世代ナノ情報合同研究会「計算物質科学の課題と展望」
    • Place of Presentation
      東京大学物性研究所
    • Year and Date
      2011-01-07
    • Related Report
      2010 Annual Research Report
  • [Presentation] エレクトロマグノン強励起によるスピンカイラリティの光スイッチの理論提案2011

    • Author(s)
      望月維人
    • Organizer
      2010年度 科研費特定領域「スピン流の創出と制御」成果報告会
    • Place of Presentation
      東京大学武田先端知ビル
    • Year and Date
      2011-01-06
    • Related Report
      2010 Annual Research Report
  • [Presentation] Theories of Dynamical Magnetoelectric Phenomena in Multiferroic RMnO32011

    • Author(s)
      望月維人
    • Organizer
      International Workshop on Novel Phenomena in Frustrated Systems
    • Place of Presentation
      La Fondaホテル(アメリカ合衆国,ニューメキシコ州サンタフェ)
    • Related Report
      2011 Final Research Report
  • [Presentation] Theories of Dynamical Magnetoelectric Phenomena in Multiferroic RMnO_32011

    • Author(s)
      望月維人
    • Organizer
      International Workshop on 「Novel Phenomena in Frustrated Systems」
    • Place of Presentation
      La Fondaホテル(アメリカ合衆国,ニューメキシコ州サンタフェ)
    • Related Report
      2011 Annual Research Report
  • [Presentation] Proposed Optical/Microwave Manipulation of Nanoscale Spin Textures : Multiferroics and Skyrmions2011

    • Author(s)
      望月維人
    • Organizer
      FIRST-QS2C Workshop on 「Emergent Phenomena of Correlated Materials」
    • Place of Presentation
      ANAインターコンチネンタル万座ビーチホテル(沖縄県)
    • Related Report
      2011 Annual Research Report
  • [Presentation] マルチフェロイックRMnO3のエレクトロマグノン励起の理論2010

    • Author(s)
      望月維人
    • Organizer
      物性科学領域横断研究会「凝縮系科学の最前線」第4回物性科学領域横断研究会
    • Place of Presentation
      東京大学武田先端知ビル
    • Year and Date
      2010-11-13
    • Related Report
      2010 Annual Research Report
  • [Presentation] Electromagnons and Optical Spin-Chirality Switching in the Multiferroic Mn Perovskites2010

    • Author(s)
      望月維人
    • Organizer
      2010 Opening Symposium of QS2C Theory Forum
    • Place of Presentation
      埼玉県和光市理化学研究所
    • Year and Date
      2010-09-28
    • Related Report
      2010 Annual Research Report
  • [Presentation] マルチフェロイックスの理論2010

    • Author(s)
      望月維人
    • Organizer
      日本物理学会2010年秋季大会領域10, 8, 7, 3シンポジウム
    • Place of Presentation
      大阪府立大学中百舌鳥キャンパス
    • Year and Date
      2010-09-24
    • Related Report
      2011 Final Research Report
  • [Presentation] マルチフェロイックスの理論2010

    • Author(s)
      望月維人
    • Organizer
      日本物理学会2010年秋季大会 領域10,8,7,3シンポジウム
    • Place of Presentation
      大阪府立大学中百舌鳥キャンパス
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Presentation] マルチフェロイックスにおけるスピンカイラリティの光スイッチの理論2010

    • Author(s)
      望月維人
    • Organizer
      日本物理学会2010年秋季大会
    • Place of Presentation
      大阪府立大学中百舌鳥キャンパス
    • Year and Date
      2010-09-24
    • Related Report
      2010 Annual Research Report
  • [Remarks]

    • URL

      http://park.itc.u-tokyo.ac.jp/nagaosa-lab/mochizuki/index.html

    • Related Report
      2011 Final Research Report
  • [Remarks]

    • URL

      http://park.itc.u-tokyo.ac.jp/nagaosa-lab/mochizuki/index.html

    • Related Report
      2011 Annual Research Report

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Published: 2010-08-23   Modified: 2020-05-15  

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