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Theoretical study and design of novel properties of topological insulators

Research Project

Project/Area Number 22540327
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Condensed matter physics I
Research InstitutionTokyo Institute of Technology

Principal Investigator

MURAKAMI Shuichi  東京工業大学, 理工学研究科, 教授 (30282685)

Project Period (FY) 2010-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Keywordsトポロジカル絶縁体 / 表面状態 / 輸送現象 / 熱電変換 / 量子ホール系
Outline of Final Research Achievements

We found that metallic 1D states on dislocations in three-dimensional topological insulators enhance the thermoelectric figure of merit at low temperature. We also found that the interface states between two topological insulators depends on the chiralities of surface Dirac cones. In particular, when the “interfacial symmetry” is preserved at the interface, we find that the band structure of the interface states closes its gap on a loop, which is unexpected for usual interface states. Finally, we studied the Weyl semimetals from the viewpoint of the topology. We calculated the general form of the band dispersion of its surface Fermi arcs, and the change of the Fermi arcs upon change of some parameter, and their dependence on the surface terminations.

Report

(5 results)
  • 2014 Final Research Report ( PDF )
  • 2013 Annual Research Report
  • 2012 Annual Research Report
  • 2011 Annual Research Report
  • 2010 Annual Research Report
  • Research Products

    (40 results)

All 2013 2012 2011 2010 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Acknowledgement Compliant: 1 results) Presentation (28 results) (of which Invited: 4 results) Book (2 results)

  • [Journal Article] Completely flat bands and fully localized states on surfaces of anisotropic diamond-lattice models2013

    • Author(s)
      高橋隆志、村上修一
    • Journal Title

      Physical Review B

      Volume: 88 Issue: 23 Pages: 2353031-9

    • DOI

      10.1103/physrevb.88.235303

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Thermoelectric transport in topological insulators2012

    • Author(s)
      Ryuji Takahashi and Shuichi Murakami
    • Journal Title

      Semicond. Sci. Technol.

      Volume: 27 Issue: 12 Pages: 124005-124005

    • DOI

      10.1088/0268-1242/27/12/124005

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin-torque efficiency enhanced by Rashba spin splitting in three dimensions2012

    • Author(s)
      Kazuhiro Tsutsui and Shuichi Murakami
    • Journal Title

      Phys. Rev. B

      Volume: 86 Issue: 11

    • DOI

      10.1103/physrevb.86.115201

    • Related Report
      2012 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Gapless Interface States between Topological Insulators with Opposite Dirac Velocities2011

    • Author(s)
      Ryuji Takahashi, Shuichi Murakami
    • Journal Title

      Phys.Rev.Lett.

      Volume: 107 Issue: 16

    • DOI

      10.1103/physrevlett.107.166805

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin Currents Induced by Nonuniform Rashba-Type Spin-Orbit Field2011

    • Author(s)
      Kazuhiro Tsutsui, Akihito Takeuchi, Gen Tatara, Shuichi Murakami
    • Journal Title

      Journal of the Physical Society of Japan

      Volume: VOL.80 Issue: 8 Pages: 084701-084701

    • DOI

      10.1143/jpsj.80.084701

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric figure of merit in topological insulators2011

    • Author(s)
      Ryuji Takahashi, Shuichi Murakami
    • Journal Title

      Journal of Physics : Conference Series

      Volume: 302 Pages: 012026-012026

    • DOI

      10.1088/1742-6596/302/1/012026

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric transport of perfectly conducting channels in two- and three-dimensional topological insulators2011

    • Author(s)
      Shuichi Murakami, Ryuji Takahashi, O A Tretiakov, Ar Abanov, Jairo Sinova
    • Journal Title

      Journal of Physics : Conference Series

      Volume: 334

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 隠れた位相-ホール効果と幾何学的位相2011

    • Author(s)
      村上修一
    • Journal Title

      数理科学

      Volume: 577 Pages: 53-58

    • Related Report
      2011 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Disordered topological quantum critical points in three-dimensional systems2010

    • Author(s)
      Ryuichi Shindou, Ryota Nakai, Shuichi Murakami
    • Journal Title

      New Journal of Physics

      Volume: 12

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Large thermoelectric figure of merit for three-dimensional topological Anderson insulators via line dislocation engineering2010

    • Author(s)
      O.A.Tretiakov, Ar.Abanov, S.Murakami, J.Sinova
    • Journal Title

      Applied Physics Letters

      Volume: 97

    • Related Report
      2010 Annual Research Report
    • Peer Reviewed
  • [Presentation] 2次元トポロジカル絶縁体半平面での固有状態とエッジスピン状態の解析2012

    • Author(s)
      佐々木健二, 村上修一
    • 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ヶ原キャンパス(大阪府)
    • Year and Date
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] 長距離不純物を含むグラフェンにおける弱磁場ホール効果2012

    • Author(s)
      野呂昌生, 安藤恒也, 村上修一
    • 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ヶ原キャンパス(大阪府)
    • Year and Date
      2012-03-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] Nonlinear optical responses to circularly polarized lights of the surface state of a topological insulator2012

    • Author(s)
      Tetsuro Misawa, Takehito Yokoyama, Shuichi Murakami
    • Organizer
      APS March Meeting 2012
    • Place of Presentation
      Boston, U.S.A.
    • Year and Date
      2012-03-02
    • Related Report
      2011 Annual Research Report
  • [Presentation] トポロジカル絶縁体表面のディラック電子系のスピン輸送2011

    • Author(s)
      村上修一
    • Organizer
      東邦大学物理学科、東邦大学複合物性研究センター共催シンポジウム「ディラック電子とスピントロニクス」
    • Place of Presentation
      東邦大学習志野キャンパス(千葉県)
    • Year and Date
      2011-12-03
    • Related Report
      2010 Annual Research Report
  • [Presentation] トポロジカル絶縁体表面電子の円偏光に対する非線形応答2011

    • Author(s)
      三澤哲郎, 横山毅人, 村上修一
    • Organizer
      第16回半導体スピン工学の基礎と応用PASPS-16
    • Place of Presentation
      東京工業大学百年記念館(東京都)
    • Year and Date
      2011-11-29
    • Related Report
      2011 Annual Research Report
  • [Presentation] 3次元ラシュバ系におけるスピントルクとその効率2011

    • Author(s)
      筒井一尋、村上修一
    • Organizer
      第16回半導体スピン工学の基礎と応用PASPS-16
    • Place of Presentation
      東京工業大学百年記念館(東京都)
    • Year and Date
      2011-11-28
    • Related Report
      2011 Annual Research Report
  • [Presentation] Spin Hall effect of electron and light2011

    • Author(s)
      S.Murakami
    • Organizer
      International Conference "Spins & Photonic Beams at Interface"
    • Place of Presentation
      Minsk, BELARUS
    • Year and Date
      2011-09-25
    • Related Report
      2011 Annual Research Report
  • [Presentation] Semiclassical Dynamics of Magnon Wavepacket and Magnon Hall Effect in Ferromagnets2011

    • Author(s)
      Shuichi Murakami, Ryo Matsumoto
    • Organizer
      PIERS2011
    • Place of Presentation
      Suzhou, China
    • Year and Date
      2011-09-12
    • Related Report
      2010 Annual Research Report
  • [Presentation] Gapless states in a junction plane between two topological insulators with opposite chiralities2011

    • Author(s)
      R.Takahashi, S.Murakami
    • Organizer
      spintech6
    • Place of Presentation
      くにびきメッセ(島根県)
    • Year and Date
      2011-08-03
    • Related Report
      2011 Annual Research Report
  • [Presentation] Surface and interface gapless states of topological insulators2011

    • Author(s)
      Shuichi Murakami
    • Organizer
      the 3rd International Workshop on Quantum Condensation (QC11)
    • Place of Presentation
      Hong Kong, China
    • Year and Date
      2011-07-14
    • Related Report
      2010 Annual Research Report
  • [Presentation] トポロジカル絶縁体のエッジ状態・表面状態による輸送現象2010

    • Author(s)
      村上修一、和田真樹、三澤哲郎
    • Organizer
      第15回半導体スピン工学の基礎と応用/PASPS15
    • Place of Presentation
      筑波大学計算科学研究センター(茨城県)
    • Year and Date
      2010-12-21
    • Related Report
      2010 Annual Research Report
  • [Presentation] トポロジカル絶縁体での特異な熱電輸送の理論的探索2010

    • Author(s)
      村上修一
    • Organizer
      第5回KEK連携研究会「熱電変換材料と新規機能物質」
    • Place of Presentation
      筑波大学(茨城県)
    • Year and Date
      2010-12-18
    • Related Report
      2010 Annual Research Report
  • [Presentation] Topological numbers and phase transitions in topological insulators2010

    • Author(s)
      S.Murakami
    • Organizer
      Statistical Physics of Quantum Systems
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2010-08-02
    • Related Report
      2010 Annual Research Report
  • [Presentation] Bismuth and bismuth-antimony alloy as topological insulators2010

    • Author(s)
      S.Murakami
    • Organizer
      SSSJ-A3 Foresight Joint Symiposium on Nanomaterials and Nanostructures
    • Place of Presentation
      Tokyo, Japan
    • Year and Date
      2010-07-05
    • Related Report
      2010 Annual Research Report
  • [Presentation] Thermoelectric transport in quantum spin Hall systems2010

    • Author(s)
      S.Murakami
    • Organizer
      Progress in Spintronics and Graphene Research
    • Place of Presentation
      Beijing, China
    • Year and Date
      2010-05-31
    • Related Report
      2010 Annual Research Report
  • [Presentation] 非ラシュバ型表面状態によって生じる新奇なスピン物性の理論的研究

    • Author(s)
      中陳 巧勤、村上 修一
    • Organizer
      第7回物性科学領域横断研究会
    • Place of Presentation
      東京大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] ワイル半金属相とトポロジカル絶縁体相の相転移 に伴う表面状態の変化

    • Author(s)
      奥川 亮、村上 修一
    • Organizer
      第7回物性科学領域横断研究会
    • Place of Presentation
      東京大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Topological spin transport in metals and ferromagnetic insulators

    • Author(s)
      Shuichi Murakami
    • Organizer
      Gordon Godfrey Workshop on Strong Electron Correlations 2013
    • Place of Presentation
      Sydney, Australia
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Spin-orbit Coupling in Topological Insulators

    • Author(s)
      Shuichi Murakami
    • Organizer
      International Symposium on Computational Science 2013
    • Place of Presentation
      Kanazawa, Japan
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Topological spin currents in solids

    • Author(s)
      Shuichi Murakami
    • Organizer
      12th Japanese-German Symposium: Emergent Phenomena in Novel Quantum Phases of Condensed Matter
    • Place of Presentation
      Izu, Japan
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Gapless Interface States between Topological Insulators with Opposite Signs of Dirac Velocities

    • Author(s)
      Shuichi Murakami and Ryuji Takahashi
    • Organizer
      2012 MRS Spring Meeting
    • Place of Presentation
      San Francisco, USA
    • Related Report
      2012 Annual Research Report
    • Invited
  • [Presentation] Fermi loop in interface states and surface flat bands in diamond lattice models

    • Author(s)
      Ryuji Takahashi and Shuichi Murakami
    • Organizer
      APS March Meeting 2013
    • Place of Presentation
      Baltimore, USA
    • Related Report
      2012 Annual Research Report
  • [Presentation] Gapless interface states between two topological insulators with crystallographic rotational symmetry

    • Author(s)
      Ryuji Takahashi and Shuichi Murakami
    • Organizer
      International Symposium "Nanoscience and Quantum Physics 2012"
    • Place of Presentation
      Tokyo, Japan
    • Related Report
      2012 Annual Research Report
  • [Presentation] Spin-torque efficiency and magnetization reversal in three-dimensional Rashba materials

    • Author(s)
      Kazuhiro Tsutsui and Shuichi Murakami
    • Organizer
      The 19th International Conference on Magnetism with Strongly Correlated Electron Systems 2012
    • Place of Presentation
      Busan, Korea
    • Related Report
      2012 Annual Research Report
  • [Presentation] 異なる符号のスピン軌道相互作用に挟まれた接合面におけるFermiループ

    • Author(s)
      高橋隆志、村上修一
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学(広島県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 2次元トポロジカル絶縁体における一般のエッジ方向でのエッジスピン状態とその伝導特性

    • Author(s)
      佐々木健二、村上修一
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学(広島県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 異符号のスピン軌道相互作用を持つトポロジカル絶縁体の接合における特異な界面エネルギー状態

    • Author(s)
      高橋隆志、村上修一
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学(神奈川県)
    • Related Report
      2012 Annual Research Report
  • [Presentation] 2 次元トポロジカル絶縁体のエッジ状態のスピン方向とポイントコンタクトでのスピンの混成

    • Author(s)
      佐々木健二、村上修一
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学(神奈川県)
    • Related Report
      2012 Annual Research Report
  • [Book] スピン流とトポロジカル絶縁体―量子物性とスピントロニクスの発展―2013

    • Author(s)
      齋藤 英治、村上 修一
    • Total Pages
      176
    • Publisher
      共立出版
    • Related Report
      2013 Annual Research Report
  • [Book] "Quantum spin Hall effect and topological insulators", Spin Current (Series on Semiconductor Science and Technology 17)2012

    • Author(s)
      Shuichi Murakami and Takehito Yokoyama
    • Total Pages
      442
    • Publisher
      Oxford University Press
    • Related Report
      2012 Annual Research Report

URL: 

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

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