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Magnetism and transport in Dirac-Weyl electron systems

Research Project

Project/Area Number 26400308
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics I
Research InstitutionTohoku University

Principal Investigator

Nomura Kentaro  東北大学, 金属材料研究所, 准教授 (00455776)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsトポロジカル物質 / ディラック電子 / 磁気輸送現象 / スピントロニクス / ワイル半金属 / 物性理論 / ディラック半金属
Outline of Final Research Achievements

In this project we studied spin-electicity conversion on the surface of topological insulators, magnetotransport, magnetization dynamics, and spintronics application in magnetic Weyl semimetals. In the first half we worked on novel electromagnetic responses on the surface of topological insulators, and in the second half we worked on a derivation of an effective field theory of magnetic Weyl semimetal with magnetic textures, magnetization dynamics, anisotropic magnetotransport. We also studied novel topological thermal responses in topological superconductors focusing on Majorana fermions and their quantized thermal Hall effect at the surface.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (28 results)

All 2017 2016 2015 2014

All Journal Article (16 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 16 results,  Acknowledgement Compliant: 15 results) Presentation (11 results) (of which Int'l Joint Research: 7 results,  Invited: 11 results) Book (1 results)

  • [Journal Article] Anisotropic magnetotransport in Dirac-Weyl magnetic junctions2017

    • Author(s)
      Yuya Ominato, Koji Kobayashi, Kentaro Nomura
    • Journal Title

      Physical Review B

      Volume: 95 Issue: 8 Pages: 0853081-6

    • DOI

      10.1103/physrevb.95.085308

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Microscopic derivation of magnon spin current in a topological insulator/ferromagnet heterostructure2017

    • Author(s)
      Nobuyuki Okuma, Kentaro Nomura
    • Journal Title

      Physical Review B

      Volume: 95 Issue: 11 Pages: 115403-115410

    • DOI

      10.1103/physrevb.95.115403

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Crossed responses of spin and orbital magnetism in topological insulators2016

    • Author(s)
      R. Nakai, K. Nomura
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 21 Pages: 2144341-8

    • DOI

      10.1103/physrevb.93.214434

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Universal charge and current on magnetic domain walls in Weyl semimetals2016

    • Author(s)
      Yasufumi Araki, Akihide Yoshida, Kentaro Nomura
    • Journal Title

      Physical Review B

      Volume: 94 Issue: 11 Pages: 115312-115312

    • DOI

      10.1103/physrevb.94.115312

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Voltage-driven magnetization switching and spin pumping in Weyl semimetals2016

    • Author(s)
      D. Kurebayashi and K. Nomura
    • Journal Title

      Phys. Rev. Applied

      Volume: 6 Issue: 4 Pages: 044013-044013

    • DOI

      10.1103/physrevapplied.6.044013

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Spin pumping into two-dimensional electron systems2016

    • Author(s)
      Takuya Inoue, Gerrit E. W. Bauer, Kentaro Nomura
    • Journal Title

      Physical Review B

      Volume: 94 Issue: 20 Pages: 2054281-7

    • DOI

      10.1103/physrevb.94.205428

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Chiral Magnetic Effect and Anomalous Hall Effect in Antiferromagnetic Insulators with Spin-Orbit Coupling2016

    • Author(s)
      A. Sekine, K. Nomura
    • Journal Title

      Phys. Rev. Lett.

      Volume: 116 Issue: 9

    • DOI

      10.1103/physrevlett.116.096401

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Spin textures and spin-wave excitations in doped Dirac-Weyl semimetals2016

    • Author(s)
      Y. Araki, K. Nomura
    • Journal Title

      Phys. Rev. B

      Volume: 93 Issue: 9 Pages: 094438-094438

    • DOI

      10.1103/physrevb.93.094438

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Charge-Induced Spin Torque in Anomalous Hall Ferromagnets2015

    • Author(s)
      K. Nomura, D. Kurebayashi
    • Journal Title

      Phys. Rev. Lett.

      Volume: 115 Issue: 12 Pages: 127201-127201

    • DOI

      10.1103/physrevlett.115.127201

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Weyl semimetal with strong long-range Coulomb interactions2015

    • Author(s)
      A. Sekine, K. Nomura
    • Journal Title

      Journal of Physics: Conference Series

      Volume: 603 Pages: 012017-012017

    • DOI

      10.1088/1742-6596/603/1/012017

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Quantum thermal Hall effect of Majorana fermions on the surface of superconducting topological insulators2015

    • Author(s)
      Y. Shimizu, A. Yamakage, K. Nomura
    • Journal Title

      Phys. Rev. B

      Volume: 91 Issue: 19

    • DOI

      10.1103/physrevb.91.195139

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Spin-Electricity Conversion Induced by Spin Injection into Topological Insulators2014

    • Author(s)
      Y. Shiomi, K. Nomura, Y. Kajiwara, K. Eto, M. Novak, K. Segawa, Y. Ando and E. Saitoh
    • Journal Title

      Phys. Rev. Lett.

      Volume: 113 Issue: 19 Pages: 196601-196601

    • DOI

      10.1103/physrevlett.113.196601

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Stability of Multinode Dirac Semimetals against Strong Long-Range Correlations2014

    • Author(s)
      Akihiko Sekine and Kentaro Nomura
    • Journal Title

      Phys. Rev. B

      Volume: 90 Issue: 7

    • DOI

      10.1103/physrevb.90.075137

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Axionic Antiferromagnetic Insulator Phase in a Correlated and Spin-Orbit Coupled System2014

    • Author(s)
      Akihiko Sekine and Kentaro Nomura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 10 Pages: 104709-104709

    • DOI

      10.7566/jpsj.83.104709

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Weyl Semimetal in the Strong Coulomb Interaction Limit2014

    • Author(s)
      Akihiko Sekine and Kentaro Nomura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 9 Pages: 094710-094710

    • DOI

      10.7566/jpsj.83.094710

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Weyl semimetal phase in solid-solution narrow-gap semiconductors2014

    • Author(s)
      Daichi Kurebayashi, Kentaro Nomura
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 83 Issue: 6 Pages: 063709-063709

    • DOI

      10.7566/jpsj.83.063709

    • NAID

      40020091498

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] Recent development in Weyl semimetals2016

    • Author(s)
      Kentaro Nomura
    • Organizer
      Topological Science Kick-Off Symposium
    • Place of Presentation
      Keio University
    • Year and Date
      2016-03-14
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Weyl Semimetals for Spintronics2016

    • Author(s)
      Kentaro Nomura
    • Organizer
      KINKEN-KIST joint seminar, Future electronic materials and devices beyond Si
    • Place of Presentation
      Tohoku University
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spin-Electromagnetic Responses in Weyl semimetals2016

    • Author(s)
      Kentaro Nomura
    • Organizer
      International Symposium on Revolutionary Atomic-Layer Materials
    • Place of Presentation
      Tohoku University
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Spin-Electromagnetic Responses in Topological Matters2016

    • Author(s)
      Kentaro Nomura
    • Organizer
      Frontier of Quantum Material Science and Nano-Technology
    • Place of Presentation
      University of Tokyo
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ワイル半金属におけるカイラル異常と磁気テクスチャの荷電効果2016

    • Author(s)
      野村健太郎
    • Organizer
      トポロジカル物質科学第2回領域会議
    • Place of Presentation
      東北大学
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] トポロジカル物質における電磁結合” 熱場の量子論とその応用2016

    • Author(s)
      野村健太郎
    • Organizer
      熱場の量子論とその応用
    • Place of Presentation
      理化学研究所
    • Related Report
      2016 Annual Research Report
    • Invited
  • [Presentation] ワイル半金属におけるカイラル量子異常と電荷磁化結合2015

    • Author(s)
      野村健太郎
    • Organizer
      第9回物性科学領域横断研究会
    • Place of Presentation
      東京大学
    • Year and Date
      2015-11-13
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Chiral anomaly and coupled charge-magnetization excitations in a Weyl semimetal2015

    • Author(s)
      Kentaro Nomura
    • Organizer
      International workshop: Mathematical Approach to Topological Phases in Spintronics
    • Place of Presentation
      Tohoku University
    • Year and Date
      2015-10-08
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] ディラック電子系のスピン物性2015

    • Author(s)
      野村健太郎
    • Organizer
      日本物理学会秋季大会
    • Place of Presentation
      関西大学
    • Year and Date
      2015-09-18
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] Spintronics in topological materials2015

    • Author(s)
      Kentaro Nomura
    • Organizer
      Novel Quantum Materials and Systems
    • Place of Presentation
      Lorentz Center, the Netherlands
    • Year and Date
      2015-09-09
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Coupled charge and magnetization in a Weyl semimetal2015

    • Author(s)
      Kentaro Nomura
    • Organizer
      New Perspectives in Spintronic and Mesoscopic Physics
    • Place of Presentation
      Kashiwa
    • Year and Date
      2015-06-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] トポロジカル絶縁体・超伝導体2016

    • Author(s)
      野村健太郎
    • Total Pages
      371
    • Publisher
      丸善出版
    • Related Report
      2016 Annual Research Report

URL: 

Published: 2014-04-04   Modified: 2020-05-15  

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