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Fabrication and electronic-structure analysis of topological nano-ribbon

Research Project

Project/Area Number 24654096
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeSingle-year Grants
Research Field Condensed matter physics II
Research InstitutionTohoku University

Principal Investigator

SOUMA Seigo  東北大学, 原子分子材料科学高等研究機構, 助教 (20431489)

Project Period (FY) 2012-04-01 – 2014-03-31
Project Status Completed (Fiscal Year 2013)
Budget Amount *help
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2013: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2012: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Keywords角度分解光電子分光 / トポロジカル絶縁体 / 界面 / スピントロニクス
Research Abstract

Despite of a huge effort for searching new topological materials carrying spin-helical Dirac fermions, mostly discovered are 3D materials by observing the surface state of topological insulator with angle-resolved photoemission spectroscopy. While the 2D topological system was theoretically proposed for several thin-film systems, a realization of such materials has been limited to very few systems mainly due to the difficulty in observing 1D edge state. In this research project, we have performed high-resolution spin-resolved ARPES on several topological insulators and thin film systems in order to elucidate the expected 1D-edge state which would emerge on nano-ribbon structure with a non-trivial topological nature. We have successfully determined bulk and surface/edge electronic structure in several topological insulators and related materials.

Report

(3 results)
  • 2013 Annual Research Report   Final Research Report ( PDF )
  • 2012 Research-status Report
  • Research Products

    (39 results)

All 2014 2013 2012 2011

All Journal Article (13 results) (of which Peer Reviewed: 13 results) Presentation (26 results) (of which Invited: 16 results)

  • [Journal Article] Relationship between Fermi surface warping and out-of-plane spin polarization in topological insulators : A view from spin- and angle-resolved photoemission2014

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

      Physical Review B

      Volume: 89 Issue: 4 Pages: 45134-1

    • DOI

      10.1103/physrevb.89.045134

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Fermiology of Strongly Spin-Orbit Coupled Superconductor Sn1-xInxTe and its Implication to Topological Superconductivity2013

    • Author(s)
      T. Sato, Y. Tanaka, K. Nakayama, S. Souma, T. Takahashi, S. Sasaki, Z. Ren, A. A. Taskin, Kouji Segawa, Yoichi Ando
    • Journal Title

      Physical Review Letters

      Volume: 110 Issue: 20

    • DOI

      10.1103/physrevlett.110.206804

    • Related Report
      2013 Annual Research Report 2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Two types of Dirac-cone surface states on the (111) surface of topological crystalline insulator SnTe2013

    • Author(s)
      Y. Tanaka, T. Shoman, K. Nakayama, S. Souma, T. Sato, T. Takahashi, M. Novak, K. Segawa, and Y. Ando
    • Journal Title

      Phys. Rev. B

      Volume: vol. 88 Issue: 23

    • DOI

      10.1103/physrevb.88.235125

    • Related Report
      2013 Final Research Report
    • Peer Reviewed
  • [Journal Article] Tunability of the k-space Location of the Dirac Cones in the Topological Crystalline Insulator Pb1-xSnxTe2013

    • Author(s)
      Y. Tanaka, T. Sato, K. Nakayama, S. Souma, T. Takahashi, Zhi Ren, M. Novak, Kouji Segawa, Yoichi Ando
    • Journal Title

      Physical Review B

      Volume: 87 Issue: 15

    • DOI

      10.1103/physrevb.87.155105

    • Related Report
      2013 Annual Research Report 2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Two types of Dirac-cone surface states on (111) surface of topological crystalline insulator SnTe2013

    • Author(s)
      Y. Tanaka, T. Shoman, K. Nakayama, S. Souma, T. Sato, T. Takahashi, M. Novak, Kouji Segawa, Yoichi Ando
    • Journal Title

      Physical Review B

      Volume: 88 Issue: 23

    • DOI

      10.1103/physrevb.88.235126

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Manipulation of Topological States and the Bulk Band Gap Using Natural Heterostructures of a Topological Insulator2012

    • Author(s)
      K. Nakayama, K. Eto. Y. Tanaka, T. Sato, S. Souma, T. Takahashi, Kouji Segawa, and Yoichi Ando
    • Journal Title

      Physical Review Letters

      Volume: 109 Issue: 23

    • DOI

      10.1103/physrevlett.109.236804

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Experimental realization of a topologicalcrystalline insulator in SnTe2012

    • Author(s)
      Y. Tanaka, Z. Ren, T. Sato, K. Nakayama, S. Souma, T. Takahashi, K. Segawa, Y. Ando
    • Journal Title

      Nature Physics

      Volume: 8 Issue: 11 Pages: 800-803

    • DOI

      10.1038/nphys2442

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin Polarization of Gapped Dirac Surface States Near the Topological Phase Transition in TiBi(S_<1-x>Sr_x)_22012

    • Author(s)
      S. Souma, et al.
    • Journal Title

      Physical Review Letters

      Volume: 109 Issue: 18 Pages: 186804-1

    • DOI

      10.1103/physrevlett.109.186804

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Anomalous Rashba effect of bismuth(111) thin films studied by high-resolution spin-and angle-resolved photoemission spectroscopy2012

    • Author(s)
      A. Takayama, et al.
    • Journal Title

      Journal of Vacuum Science & Technology B

      Volume: 30 Issue: 4

    • DOI

      10.1116/1.4731467

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tunable Spin Polarization in Bismuth Ultrathin Film on Si(111)2012

    • Author(s)
      A. Takayama, T. Sato, S. Souma, T. Oguchi, and T. Takahashi
    • Journal Title

      Nano Lett

      Volume: 12 Issue: 4 Pages: 1776-1779

    • DOI

      10.1021/nl2035018

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Evolution of electronic structure upon Cu doping in the topological insulator Bi_2Se_32012

    • Author(s)
      Y.Tanaka, et al
    • Journal Title

      Phys.Rev.B

      Volume: 85 Issue: 12

    • DOI

      10.1103/physrevb.85.125111

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Tunable Dirac cone in the topological insulator Bi_<2-x>Sb_xTe_<3-y>Se_y2012

    • Author(s)
      T.Arakane
    • Journal Title

      Nature Communications

      Volume: 3 Issue: 1 Pages: 636-636

    • DOI

      10.1038/ncomms1639

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Direct Observation of the Topological Surface States in Lead-Based Ternary Telluride Pb(Bi_<1-x>Sb_x)_2Te_42011

    • Author(s)
      S.Souma, K.Eto, M.Nomura, K.Nakayama, T.Sato, T.Takahashi, Kouji Segawa, Yoichi Ando
    • Journal Title

      Physical Review Letters

      Volume: Vol.108 Issue: 11 Pages: 116801-15

    • DOI

      10.1103/physrevlett.108.116801

    • Related Report
      2013 Final Research Report 2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Bi薄膜におけるエッジ構造のスピン分解ARPES2014

    • Author(s)
      高山あかり
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Bi蒸着TlBiSe2の電子状態:高分解能ARPES2014

    • Author(s)
      正満拓也
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] トポロジカルクリスタル絶縁体SnTeの電子構造の面方位依存性2014

    • Author(s)
      田中祐輔
    • Organizer
      日本物理学会 第69回年次大会
    • Place of Presentation
      東海大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] トポロジカル絶縁体の高分解能ARPES2013

    • Author(s)
      相馬清吾
    • Organizer
      平成25年度筑波大-KEK連携推進事業研究会
    • Place of Presentation
      つくば
    • Year and Date
      2013-03-02
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] Spin-helical Dirac-cone surface states of 3D topological materials2013

    • Author(s)
      Seigo Souma
    • Organizer
      AIMR/UCL Materials Workshop
    • Place of Presentation
      London、UK
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] トポロジカル絶縁体新物質と吸着成長した金属薄膜の高分解能ARPES2013

    • Author(s)
      相馬清吾
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] スピン分解ARPESによるディラック電子系の研究2013

    • Author(s)
      相馬清吾
    • Organizer
      金研CMRIシンポジウム
    • Place of Presentation
      仙台
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] トポロジカル絶縁体新物質と吸着成長した金属薄膜のARPES2013

    • Author(s)
      相馬清吾
    • Organizer
      日本物理学会2013年秋季大会 領域4・6・7合同シンポジウム「トポロジカル絶縁体・超伝導体の新物質・新構造」
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] 高分解能ARPESによるトポロジカル絶縁体のフェルミ面ワーピング効果2013

    • Author(s)
      野村円香
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 金属蒸着TlBiSe2の電子構造:高分解能ARPES2013

    • Author(s)
      正満拓也
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] 高分解能ARPESによるBi/Si(111)表面の特異な電子状態2013

    • Author(s)
      高山あかり
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] トポロジカルクリスタル絶縁体(Pb, Sn)Teの電子状態:高分解能ARPES2013

    • Author(s)
      田中祐輔
    • Organizer
      日本物理学会2013年秋季大会
    • Place of Presentation
      徳島大学
    • Related Report
      2013 Annual Research Report
  • [Presentation] Spin-helical Dirac-cone surface states of 3D topological materials2013

    • Author(s)
      Seigo Souma
    • Organizer
      AIMR/UCL Materials Workshop
    • Place of Presentation
      London, UK
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] スピン軌道相互作用に起因したスピン偏極電子状態の高分解能ARPES2013

    • Author(s)
      高山あかり
    • Organizer
      第9回放射光表面顕微ナノ合同シンホシウム
    • Place of Presentation
      東北大学
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] スピン分解ARPESによるディラック電子系の研究2013

    • Author(s)
      相馬 清吾
    • Organizer
      CMRI第2回シンポジウム
    • Place of Presentation
      金属材料研究所、東北大
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] W(110)表面の高分解能ARPES2013

    • Author(s)
      本間 康平
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 金属吸着したトポロジカル絶縁体表面の高分解能ARPES2013

    • Author(s)
      正満 拓也
    • Organizer
      日本物理学会第68回年次大会
    • Place of Presentation
      広島大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 放射光を用いたトポロジカル絶縁体の高分解能ARPES2012

    • Author(s)
      相馬清吾
    • Organizer
      高エネ研CMRC研究会
    • Place of Presentation
      つくば
    • Year and Date
      2012-12-07
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] "Spin-resolved ARPES on topological insulators"、AIMR workshop"Topological Functional Materials and Devices"2012

    • Author(s)
      Seigo Souma
    • Organizer
      AIMR
    • Place of Presentation
      Sendai
    • Year and Date
      2012-12-01
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] スピン分解ARPESによるトポロジカル絶縁体の電子構造の研究2012

    • Author(s)
      相馬清吾
    • Organizer
      東大物性研短期研究会"極限コヒーレント光科学研究センタ-(LASOR)発足記念ワークショップ
    • Place of Presentation
      柏市
    • Year and Date
      2012-11-29
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] スピン分解光電子分光によるスピントロニクス研究の新展開2012

    • Author(s)
      相馬清吾
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜
    • Related Report
      2013 Final Research Report
    • Invited
  • [Presentation] スピン分解ARPESによるトポロジカル絶縁体の電子構造の研究2012

    • Author(s)
      相馬 清吾
    • Organizer
      東大物性研短期研究会”極限コヒーレント光科学研究センタ- (LASOR)発足記念ワークショップ”
    • Place of Presentation
      東大物性研、柏市
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] スピン分解光電子分光によるスピントロニクス研究の新展開2012

    • Author(s)
      相馬 清吾
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] Pb系トポロジカル絶縁体のスピン分解ARPES2012

    • Author(s)
      野村 円香
    • Organizer
      日本物理学会2012年秋季大会
    • Place of Presentation
      横浜国立大学
    • Related Report
      2012 Research-status Report
  • [Presentation] Spin-resolved ARPES on topological insulators2012

    • Author(s)
      相馬 清吾
    • Organizer
      WPI-AIMR workshop "Topological functional materials and devices"
    • Place of Presentation
      東北大学
    • Related Report
      2012 Research-status Report
    • Invited
  • [Presentation] 放射光を用いたトポロジカル絶縁体の高分解能ARPES2012

    • Author(s)
      相馬 清吾
    • Organizer
      CMRC 研究会「ARPES,中性子散乱,μSR を用いた強相関系研究の最近の発展」
    • Place of Presentation
      高エネ研、つくば
    • Related Report
      2012 Research-status Report
    • Invited

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

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