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Theoretical Study of Spin-related Phenomena with Topological Invariants and Design of Its Application Devices

Research Project

Project/Area Number 24560001
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionHokkaido University

Principal Investigator

KONDO Kenji  北海道大学, 電子科学研究所, 准教授 (50360946)

Co-Investigator(Kenkyū-buntansha) KAIJU Hideo  北海道大学, 電子科学研究所, 准教授 (70396323)
Co-Investigator(Renkei-kenkyūsha) SASAKURA Hirotaka  北海道大学, 電子科学研究所, 助教 (90374595)
Project Period (FY) 2012-04-01 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsスピントロニクス / 物性理論 / 第一原理計算 / 磁性 / スピン輸送
Outline of Final Research Achievements

We have proposed a novel device which is called "spin quantum cross structure device (SQCS-device)". In this study, the spin conductance was calculated for a SQCS-device having a topological insulator as the left electrode and a normal metal as the right electrode. Topological insulators have attracted much interest by the exotic character that they have insulating bulk states and conducting surface states simultaneously. Their band structures are determined by time reversal symmetry. Therefore, we introduced a magnetic insulator deposited on the topological insulator to control its band structure in the model. Then, the spin conductance was calculated as a function of magnetization of the magnetic insulator for the SQCS-device with the topological insulator. As a result, it is found that the magnetization of the magnetic insulator can control the spin conductance very well. This result suggests that the SQCS-device with the topological insulator can be a promising novel device.

Report

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

    (49 results)

All 2015 2014 2013 2012 Other

All Journal Article (12 results) (of which Peer Reviewed: 12 results,  Acknowledgement Compliant: 2 results) Presentation (31 results) (of which Invited: 4 results) Book (1 results) Remarks (5 results)

  • [Journal Article] Validity of the Free Electron Model for Two-Dimensional Electrodes2015

    • Author(s)
      Kenji Kondo
    • Journal Title

      Material Research Society Symposium Proceedings

      Volume: 1753

    • DOI

      10.1557/opl.2015.112

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Magnetic Properties on FeAl Stripes and Dots Induced by Nanosecond Pulsed Laser Irradiation2014

    • Author(s)
      H. Kaiju, Y. Yoshida, S. Watanabe, K. Kondo, A. Ishibashi and K. Yoshimi
    • Journal Title

      Journal of the Magnetics Society of Japan

      Volume: 38 Issue: 4 Pages: 157-161

    • DOI

      10.3379/msjmag.1407R001

    • NAID

      130004951221

    • ISSN
      1882-2924, 1882-2932
    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Spin transport in normal metal/insulator/topological insulator coupled to ferromagnetic insulator structures2014

    • Author(s)
      Kenji Kondo
    • Journal Title

      J. Appl. Phys.

      Volume: 115 Issue: 17

    • DOI

      10.1063/1.4852119

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Magnetic Properties on the Surface of FeAl Stripes Induced by Nanosecond Pulsed Laser Irradiation2014

    • Author(s)
      H. Kaiju, Y. Yoshida, S. Watanabe, K. Kondo, A. Ishibashi and K. Yoshimi
    • Journal Title

      J. Appl. Phys.

      Volume: 115 Issue: 17

    • DOI

      10.1063/1.4862376

    • NAID

      120005457016

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Focused Magneto-Optic Kerr Effect Spectroscopy in Ni75Fe25 and Fe Ferromagnetic Thin Films on Organic Substrates2013

    • Author(s)
      K. Kondo, H. Kaiju and A. Ishibashi
    • Journal Title

      Jpn. J. Appl. Phys.

      Volume: 52 Issue: 1R Pages: 130011-130015

    • DOI

      10.7567/jjap.52.013001

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Nanopatterns induced by pulsed laser irradiation on the surface of an Fe-Al alloy and their magnetic properties2013

    • Author(s)
      Y. Yoshida, K. Oosawa, S. Watanabe, H. Kaiju, K. Kondo, A. Ishibashi and K. Yoshimi
    • Journal Title

      Appl. Phys. Lett.

      Volume: 102 Issue: 18 Pages: 1831091-1831094

    • DOI

      10.1063/1.4804363

    • NAID

      120005228655

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Critical effect of spin-dependent transport in a tunnel barrier on enhanced Hanle-type signals observed in three-terminal geometry2012

    • Author(s)
      T. Uemura, K. Kondo, J. Fujisawa, K.-i.Matsuda, and M. Yamamoto
    • Journal Title

      Appl. Phys. Lett

      Volume: vol.101 Issue: 13

    • DOI

      10.1063/1.4754545

    • NAID

      120004883874

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fabrication of Nickel/ Organic-Molecules/Nickel Nanoscale Junctions Utilizing Thin-Film Edges and Their Structural and ElectricalSiGe2012

    • Author(s)
      H. Kaiju, K. Kondo, N. Basheer, N.Kawaguchi, S. White, A. Hirata, M. Ishimaru, Y. Hirotsu and A. Ishibashi
    • Journal Title

      Jpn. J. Appl. Phys

      Volume: 51 Issue: 6R Pages: 652021-652028

    • DOI

      10.1143/jjap.51.065202

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Spin Transport in Ferromagnet/Semiconductor/Ferromagnet Structures with Cubic Dresselhaus Spin-Orbit-Interaction2012

    • Author(s)
      近藤憲治
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Issue: 7

    • DOI

      10.1063/1.3677799

    • NAID

      120005463896

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Surface Roughness and Magnetic Properties of Co Ferromagnetic Thin Films on Polyethylene Naphthalate Organic Substrates2012

    • Author(s)
      海住英生、阿部太郎、近藤憲治、石橋晃
    • Journal Title

      Journal of the Vacuum Society of Japan

      Volume: 55 Issue: 4 Pages: 187-190

    • DOI

      10.3131/jvsj2.55.187

    • NAID

      10030563138

    • ISSN
      1882-2398, 1882-4749
    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Longitudinal ana transverse exciton-spin relaxation in a single InAsP quantum dot embedded inside a standing InP nanowire using photoluminescence spectroscopy2012

    • Author(s)
      笹倉弘理
    • Journal Title

      Physical Review B

      Volume: 85 Issue: 7

    • DOI

      10.1103/physrevb.85.075324

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Surface Morphologies and Magnetic Properties of Fe and Co Magnetic Thin Films on Polyethylene Naphthalate Organic Substrates2012

    • Author(s)
      海住英生
    • Journal Title

      Journal of Applied Physics

      Volume: 111 Issue: 7

    • DOI

      10.1063/1.3670609

    • NAID

      120005463895

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Presentation] Spin Injection to Semiconductor from Topological Insulator Coupled to Ferromagnetic Insulator through the Barrier2014

    • Author(s)
      Kenji Kondo
    • Organizer
      The 15th Ries-Hokudai International Symposium joined with the 3rd International Symposium of Nano-Macro Materials, Devices, and System Research Alliance Project
    • Place of Presentation
      Gateaux Kingdom Sapporo (Hokkaido・Sapporo)
    • Year and Date
      2014-12-16 – 2014-12-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] AC impedance characteristics of Co/Alq3/Ni75Fe25 junctions2014

    • Author(s)
      T. Sakashita, Y. Kamaya, H. Kaiju, K. Kondo and A. Ishibashi
    • Organizer
      The 15th Ries-Hokudai International Symposium joined with the 3rd International Symposium of Nano-Macro Materials, Devices, and System Research Alliance Project
    • Place of Presentation
      Gateaux Kingdom Sapporo (Hokkaido・Sapporo)
    • Year and Date
      2014-12-16 – 2014-12-17
    • Related Report
      2014 Annual Research Report
  • [Presentation] Validity of the Free Electron Model for Two-Dimensional Electrodes2014

    • Author(s)
      Kenji Kondo
    • Organizer
      2014 MRS Fall Meeting
    • Place of Presentation
      Boston (USA)
    • Year and Date
      2014-11-30 – 2014-12-05
    • Related Report
      2014 Annual Research Report
  • [Presentation] Ni75Fe25/Alq3/Co接合における交流インピーダンス特性2014

    • Author(s)
      坂下 友規、釜谷 悠介、海住 英生、近藤 憲治、石橋 晃
    • Organizer
      第75回応用物理学会秋季学術講演会
    • Place of Presentation
      北海道大学 (北海道・札幌市)
    • Year and Date
      2014-09-17 – 2014-09-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] フォトンフォトキャリア直交型高効率太陽電池用導波路の検討2014

    • Author(s)
      谷口 朝哉、河西 剛、近藤 憲治、石橋 晃
    • Organizer
      第75回応用物理学会秋季学術講演会
    • Place of Presentation
      北海道大学 (北海道・札幌市)
    • Year and Date
      2014-09-17 – 2014-09-20
    • Related Report
      2014 Annual Research Report
  • [Presentation] 障壁を介したトポロジカル絶縁体から半導体へのスピン注入2014

    • Author(s)
      近藤 憲治
    • Organizer
      日本物理学会秋季大会2014
    • Place of Presentation
      中部大学 春日井キャンパス (愛知県・春日井市)
    • Year and Date
      2014-09-07 – 2014-09-10
    • Related Report
      2014 Annual Research Report
  • [Presentation] Spin transport in normal metal/insulator/topological insulator coupled to ferromagnetic insulator structures2013

    • Author(s)
      Kenji Kondo
    • Organizer
      The 58th Annual Magnetism and Magnetic Materials Conference
    • Place of Presentation
      Sheraton Denver Downtown Hotel (Denver, USA)
    • Related Report
      2013 Research-status Report
  • [Presentation] Magnetic properties on the surface of an Fe52Al48 alloy induced by nanosecond pulsed laser irradiation2013

    • Author(s)
      H. Kaiju, Y. Yoshida, K. Oosawa, S. Watanabe, K. Kondo, A. Ishibashi and K. Yoshimi
    • Organizer
      The 58th Annual Magnetism and Magnetic Materials Conference
    • Place of Presentation
      Sheraton Denver Downtown Hotel (Denver, USA)
    • Related Report
      2013 Research-status Report
  • [Presentation] Negative Magnetoresistance in Ferromagnet/Semiconductor/Ferromagnet Structures with Cubic Dresselhaus Spin-Orbit-Interaction2013

    • Author(s)
      Kenji Kondo
    • Organizer
      The 14th RIES-Hokudai International Symposium
    • Place of Presentation
      Gateaux Kingdom Sapporo (Sapporo, Japan)
    • Related Report
      2013 Research-status Report
  • [Presentation] Magnetic Properties of Fe and Co Thin Films on Polyethylene Naphthalate Organic Substrates2013

    • Author(s)
      H. Kaiju, K. Kondo, and A. Ishibashi
    • Organizer
      The 14th RIES-Hokudai International Symposium
    • Place of Presentation
      Gateaux Kingdom Sapporo (Sapporo, Japan)
    • Related Report
      2013 Research-status Report
  • [Presentation] Self-organized Nanodot-like Patterns and their Magnetic Properties on the Surface of an FeAl alloy by Nanosecond Pulsed Laser Irradiation2013

    • Author(s)
      Y. Yoshida, S. Watanabe, H. Kaiju, K. Kondo, A. Ishibashi, and K. Yoshimi
    • Organizer
      The 14th RIES-Hokudai International Symposium
    • Place of Presentation
      Gateaux Kingdom Sapporo (Sapporo, Japan)
    • Related Report
      2013 Research-status Report
  • [Presentation] Ni-based Nanoscale Junctions Utilizing Thin-Film Edges2013

    • Author(s)
      H. Kaiju, K. Kondo, M. Ishimaru, Y. Hirotsu, and A. Ishibashi
    • Organizer
      2nd International Congress on Advanced Materials
    • Place of Presentation
      Zhenjiang Mingdu Hotel (Zhenjiang, China)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Fabrication of Nanoscale Junctions Utilizing Thin-Film Edges and Their Structural and Electrical Properties2013

    • Author(s)
      H. Kaiju, K. Kondo, M. Ishimaru, Y. Hirotsu, and A. Ishibashi
    • Organizer
      Collaborative Conference on Materials Research 2013
    • Place of Presentation
      Ramada Plaza Jeju Hotel (Jeju Island, South Korea)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] Fabrication of Ni-based Nanoscale Junctions Utilizing Thin-Film Edges and Their Structural and Electrical Properties2013

    • Author(s)
      H. Kaiju, K. Kondo, M. Ishimaru, Y. Hirotsu, and A. Ishibashi
    • Organizer
      The 2013 Energy, Materials and Nanotechnology Fall Meeting
    • Place of Presentation
      DoubleTree by Hilton Hotel (Florida, USA)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 2次元金属電極における自由電子近似の妥当性2013

    • Author(s)
      近藤憲治
    • Organizer
      日本物理学会秋季大会2013
    • Place of Presentation
      徳島大学 (徳島)
    • Related Report
      2013 Research-status Report
  • [Presentation] 集光型磁気光学Kerr効果によるCo/PENの磁気光学定数の決定と表面磁性2013

    • Author(s)
      近藤憲治、海住英生、石橋 晃
    • Organizer
      日本物理学会秋季大会2013
    • Place of Presentation
      徳島大学 (徳島)
    • Related Report
      2013 Research-status Report
  • [Presentation] Co/Alq3/Ni75Fe25接合における電気・磁気・構造特性2013

    • Author(s)
      釜谷 悠介、海住 英生、近藤 憲治、石橋 晃
    • Organizer
      日本物理学会秋季大会2013
    • Place of Presentation
      徳島大学 (徳島)
    • Related Report
      2013 Research-status Report
  • [Presentation] Co/PENにおける面内磁気光学カー効果の回転磁場依存性2013

    • Author(s)
      海住 英生、近藤 憲治、阿部 太郎、石橋 晃
    • Organizer
      日本物理学会秋季大会2013
    • Place of Presentation
      徳島大学 (徳島)
    • Related Report
      2013 Research-status Report
  • [Presentation] ナノ秒パルスレーザー照射によるFeAl表面ナノパターンとその磁気特性2013

    • Author(s)
      吉田裕、大澤和也、渡辺精一、海住英生、近藤憲治、石橋晃、吉見亨祐
    • Organizer
      2013年日本金属学会春季講演大会
    • Place of Presentation
      東京理科大学神楽坂キャンパス (新宿区)
    • Related Report
      2013 Research-status Report
  • [Presentation] 薄膜エッジを利用したナノスケール接合の作製とその電気伝導特性2013

    • Author(s)
      海住英生、近藤憲治、石丸学、弘津禎彦、石橋晃
    • Organizer
      物質・デバイス領域共同研究拠点研究会
    • Place of Presentation
      北海道大学電子科学研究所1F会議室 (札幌)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] ナノ秒パルスレーザー照射したFe52Al48表面の磁気特性2013

    • Author(s)
      海住英生、吉田裕、大澤和也、渡辺精一、近藤憲治、石橋晃、吉見享祐
    • Organizer
      第37回日本磁気学会学術講演会
    • Place of Presentation
      北海道大学 (札幌)
    • Related Report
      2013 Research-status Report
  • [Presentation] Tunnel barrier thickness dependence of Hanle-type signals in CoFe/MgO/n-Si and CoFe/MgO/n-Ge junctions investigated through three-terminal configuration2012

    • Author(s)
      T. Uemura, L. F. G, J. Fujisawa, K. Kondo, K. Matsuda and M. Yamamoto
    • Organizer
      2012 International Conference on Solid State Devices and Materials
    • Place of Presentation
      国立京都国際会館 (京都 )
    • Related Report
      2012 Research-status Report
  • [Presentation] 3次のDresselhaus-スピン軌道相互作用下の強磁性 体/半導体/強磁性体における負の磁気抵抗2012

    • Author(s)
      近藤 憲治
    • Organizer
      2012日本物理学会秋季大会
    • Place of Presentation
      横浜国立大学 (横浜)
    • Related Report
      2012 Research-status Report
  • [Presentation] 集光型磁気光学Kerr効果による有機基板上の強磁性 薄膜(Ni75Fe25ならびにFe)の表面磁性2012

    • Author(s)
      近藤 憲治、海住 英生、石橋 晃
    • Organizer
      2012日本物理学会秋季大会
    • Place of Presentation
      横浜国立大学 (横浜)
    • Related Report
      2012 Research-status Report
  • [Presentation] ポリエチレンナフタレート有機膜上のCo、Fe強磁性薄膜における磁気特性2012

    • Author(s)
      海住 英生、阿部 太郎、近藤 憲治、石橋 晃
    • Organizer
      2012日本物理学会秋季大会
    • Place of Presentation
      横浜国立大学 (横浜)
    • Related Report
      2012 Research-status Report
  • [Presentation] Ni75Fe25/Alq3/Co接合における電流電圧特性に関す る研究2012

    • Author(s)
      釜谷 悠介、海住 英生、近藤 憲治、石橋 晃
    • Organizer
      2012日本物理学会秋季大会
    • Place of Presentation
      横浜国立大学 (横浜)
    • Related Report
      2012 Research-status Report
  • [Presentation] 薄膜エッジを用いたナノスケール接合の作製とその電気伝導特性2012

    • Author(s)
      海住 英生、近藤 憲治、石橋 晃
    • Organizer
      附置研究所アライアンス「次世代エレクトロニクス」グループ(G1)分科会
    • Place of Presentation
      加藤科学振興会軽井沢研修所 (長野県軽井沢町)
    • Related Report
      2012 Research-status Report
  • [Presentation] Negative Magnetoresistance in Ferromagnet/Semiconductor/Ferromagnet Structures with Cubic Dresselhaus Spin-Orbit-Interaction2012

    • Author(s)
      Kenji Kondo
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan Exhibition Convention Center (Korea)
    • Related Report
      2012 Research-status Report
  • [Presentation] Focused Magneto-Optic Kerr Effect Spectroscopy in Ni75Fe25 and Fe Ferromagnetic Thin Films on Organic Substrates2012

    • Author(s)
      K. Kondo, H. Kaiju and A. Ishibashi
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan Exhibition Convention Center (Korea)
    • Related Report
      2012 Research-status Report
  • [Presentation] Magnetic Properties of Co Thin Films on Polyethylene Naphthalate Organic Substrates2012

    • Author(s)
      H. Kaiju, T. Abe, K. Kondo and A. Ishibashi
    • Organizer
      The 19th International Conference on Magnetism
    • Place of Presentation
      Busan Exhibition Convention Center (Korea)
    • Related Report
      2012 Research-status Report
  • [Presentation] MgO thickness dependence of spin accumulation signal in Co50Fe50/MgO/Si2012

    • Author(s)
      T. Uemura, K. Kondo, J. Fujisawa, K. Matsuda and M. Yamamoto
    • Organizer
      2012 IEEE International Magnetics Conference
    • Place of Presentation
      Vancouver Convention Center (Canada)
    • Related Report
      2012 Research-status Report
  • [Book] Recent Res. Devel. Applied Phys2012

    • Author(s)
      Hideo Kaiju, Kenji Kondo, Manabu Ishimaru, Yoshihiko Hirotsu, Akira Ishibashi
    • Total Pages
      23
    • Publisher
      Transworld Research Network
    • Related Report
      2012 Research-status Report
  • [Remarks] スピン量子十字構造素子ならびにスピン伝導の研究

    • URL

      http://qed4.es.hokudai.ac.jp/SpinQuantumCross2.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] Research in spin quantum cross structure devices

    • URL

      http://qed4.es.hokudai.ac.jp/en/SpinQuantumCross.html

    • Related Report
      2014 Annual Research Report
  • [Remarks] スピン量子十字構造素子ならびにスピン伝導の研究

    • URL

      http://qed4.es.hokudai.ac.jp/SpinQuantumCross.html

    • Related Report
      2013 Research-status Report
  • [Remarks] Research in spin quantum cross structure devices

    • URL

      http://qed4.es.hokudai.ac.jp/en/SpinQuantumCross.html

    • Related Report
      2013 Research-status Report
  • [Remarks] スピン量子十字構造デバイスのトランスポート理論

    • URL

      http://qed4.es.hokudai.ac.jp/SpinQuantumCross.html

    • Related Report
      2012 Research-status Report

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Published: 2013-05-31   Modified: 2019-07-29  

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