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Topological conduction in pyrochlore iridate interface

Research Project

Project/Area Number 26610098
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Condensed matter physics II
Research InstitutionThe University of Tokyo

Principal Investigator

Uchida Masaki  東京大学, 工学(系)研究科(研究院), 助教 (50721726)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2014: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsワイル半金属 / イリジウム酸化物 / 表面・界面 / パイロクロア格子 / 時間反転対称性 / 磁気ドメイン / 酸化物薄膜 / 磁気伝導
Outline of Final Research Achievements

Pyrochlore oxides possessing all-in-all-out spin ordering have attracted burgeoning interest as a new topological candidate material called Weyl semimetal. In this research, we have tailored pyrochlore iridate single-crystaline films and heterostructures, and then investigated a nontrivial metallic surface state appearing at all-in-all-out/all-out-all-in single magnetic domain wall formed at the heterointerface.

Report

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

    (15 results)

All 2016 2015 2014

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 1 results,  Acknowledgement Compliant: 7 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results)

  • [Journal Article] All-in-all-out magnetic domain size in pyrochlore iridate thin films as probed by local magnetotransport2016

    • Author(s)
      T. C. Fujita, M. Uchida, Y. Kozuka, W. Sano, A. Tsukazaki, T. Arima, M. Kawasaki
    • Journal Title

      Applied Physics Letters

      Volume: 108 Issue: 2 Pages: 022402-022402

    • DOI

      10.1063/1.4939742

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Effective carrier doping and metallization in La xSr 2-x-yBa yIrO 4-δ thin films2016

    • Author(s)
      M. Ito, M. Uchida, Y. Kozuka, K. S. Takahashi, M. Kawasaki
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 4 Pages: 045139-045139

    • DOI

      10.1103/physrevb.93.045139

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Epitaxially Stabilized Oxide Composed of Twisted Triangular-Lattice Layers2016

    • Author(s)
      M. Uchida, K. Ohba, Y. Ohuchi, Y. Kozuka, M. Kawasaki
    • Journal Title

      Chemistry of Materials

      Volume: 28 Issue: 4 Pages: 1166-1166

    • DOI

      10.1021/acs.chemmater.5b04702

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] All-in-all-out magnetic domain wall conduction in a pyrochlore iridate heterointerface2016

    • Author(s)
      T. C. Fujita, M. Uchida, Y. Kozuka, W. Sano, A. Tsukazaki, T. Arima, M. Kawasaki
    • Journal Title

      Physical Review B

      Volume: 93 Issue: 6 Pages: 064419-064419

    • DOI

      10.1103/physrevb.93.064419

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Odd-parity magnetoresistance in pyrochlore iridate thin films with broken time-reversal symmetry2015

    • Author(s)
      Takahiro C. Fujita, Yusuke Kozuka, Masaki Uchida, Atsushi Tsukazaki, Taka-hisa Arima, and Masashi Kawasaki
    • Journal Title

      Scientific Reports

      Volume: 5 Issue: 1 Pages: 9711-9711

    • DOI

      10.1038/srep09711

    • Related Report
      2015 Annual Research Report 2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Topological Hall effect in thin films of the Heisenberg ferromagnet EuO2015

    • Author(s)
      Y. Ohuchi, Y. Kozuka, M. Uchida, K. Ueno, A. Tsukazaki, M. Kawasaki
    • Journal Title

      Physical Review B

      Volume: 91 Issue: 24 Pages: 245115-245115

    • DOI

      10.1103/physrevb.91.245115

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Field-direction control of the type of charge carriers in nonsymmorphic IrO22015

    • Author(s)
      M. Uchida, W. Sano, K. S. Takahashi, T. Koretsune, Y. Kozuka, R. Arita, Y. Tokura, M. Kawasaki
    • Journal Title

      Physical Review B

      Volume: 91 Issue: 24 Pages: 241119-241119

    • DOI

      10.1103/physrevb.91.241119

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] パイロクロア型イリジウム酸化物ヘテロ界面における磁気ドメイン壁伝導2016

    • Author(s)
      藤田貴啓, 打田正輝, 小塚裕介, 佐野航, 小川翔平, 塚崎敦, 有馬孝尚, 川崎雅司
    • Organizer
      日本物理学会第71回年次大会(21pBN-16)
    • Place of Presentation
      東北学院大学(宮城県仙台市)
    • Year and Date
      2016-03-21
    • Related Report
      2015 Annual Research Report
  • [Presentation] ツイストした三角格子層からなる新層状酸化物薄膜の作製2016

    • Author(s)
      大羽健太, 打田正輝, 大内祐貴, 小塚裕介, 川﨑雅司
    • Organizer
      第63回応用物理学会春季学術講演会(20pH111-4)
    • Place of Presentation
      東京工業大学(東京都目黒区)
    • Year and Date
      2016-03-20
    • Related Report
      2015 Annual Research Report
  • [Presentation] Epitaxially stabilized oxide film composed of twisted triangular-lattice layers2015

    • Author(s)
      M. Uchida
    • Organizer
      Collaborative Conference on Crystal Growth 2015
    • Place of Presentation
      香港(中国)
    • Year and Date
      2015-12-16
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ノンシンモルフィック半金属IrO2におけるキャリアタイプの磁場方位制御2015

    • Author(s)
      打田正輝, 佐野航, 高橋圭, 是常隆, 小塚裕介, 有田亮太郎, 十倉好紀, 川﨑雅司
    • Organizer
      日本物理学会2015年秋季大会(18aDC-6)
    • Place of Presentation
      関西大学(大阪府吹田市)
    • Year and Date
      2015-09-18
    • Related Report
      2015 Annual Research Report
  • [Presentation] パイロクロア型Ir酸化物薄膜の磁気ドメイン形成における格子歪の効果2015

    • Author(s)
      藤田貴啓, 小川翔平, 打田正輝, 小塚裕介, 川﨑雅司
    • Organizer
      第76回応用物理学会秋季学術講演会(14p2H-3)
    • Place of Presentation
      名古屋国際会議場(愛知県名古屋市)
    • Year and Date
      2015-09-14
    • Related Report
      2015 Annual Research Report
  • [Presentation] パイロクロア型Ir酸化物の磁気ドメイン境界における磁気輸送現象2015

    • Author(s)
      藤田貴啓,佐野航,打田正輝,小塚裕介,塚崎敦,有馬孝尚,川﨑雅司
    • Organizer
      第62回応用物理学会春季学術講演会(11p-D10-1)
    • Place of Presentation
      東海大学(湘南)
    • Year and Date
      2015-03-11
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] パイロクロア型Ir酸化物薄膜の磁気ドメイン制御と局所輸送特性2015

    • Author(s)
      小川翔平,藤田貴啓,打田正輝,小塚裕介,塚崎敦,有馬孝尚,川﨑雅司
    • Organizer
      第62回応用物理学会春季学術講演会(11p-D10-2)
    • Place of Presentation
      東海大学(湘南)
    • Year and Date
      2015-03-11
    • Related Report
      2014 Research-status Report
  • [Presentation] パイロクロア型イリジウム酸化物ヘテロ接合における磁気ドメイン境界の制御と界面伝導の観測2014

    • Author(s)
      藤田貴啓,佐野航,打田正輝,小塚裕介,塚﨑敦,有馬孝尚,川﨑雅司
    • Organizer
      第75回応用物理学会秋季学術講演会(19p-A10-7)
    • Place of Presentation
      北海道大学(札幌)
    • Year and Date
      2014-09-19
    • Related Report
      2014 Research-status Report

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

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