• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Exploration of rare earth oxide spintronics using room temperature ferromagnetic oxide semiconductor with large magnetization

Research Project

Project/Area Number 18H03872
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 29:Applied condensed matter physics and related fields
Research InstitutionTohoku University

Principal Investigator

FUKUMURA Tomoteru  東北大学, 材料科学高等研究所, 教授 (90333880)

Co-Investigator(Kenkyū-buntansha) 岡 大地  東北大学, 理学研究科, 助教 (20756514)
Project Period (FY) 2018-04-01 – 2022-03-31
Project Status Discontinued (Fiscal Year 2021)
Budget Amount *help
¥44,980,000 (Direct Cost: ¥34,600,000、Indirect Cost: ¥10,380,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2020: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2019: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Fiscal Year 2018: ¥21,840,000 (Direct Cost: ¥16,800,000、Indirect Cost: ¥5,040,000)
Keywordsスピントロニクス / 酸化物エレクトロニクス / 薄膜新材料 / エピタキシャル成長 / ヘテロ構造 / 超伝導体
Outline of Final Research Achievements

In fields of spintronics, ferromagnetic semiconductors are required to fulfill both high Curie temperature and large magnetization. However, such requirement has not been satisfied yet. In this study, we discovered high temperature ferromagnetic semiconductor with large magnetization, which is not diluted ferromagnetic semiconductor. In addition, we discovered various rare earth monoxides such as ferromagnetic metal, highly conducting semiconductors, and superconductor. Their simple rocksalt structure enables to fabricate their heteroepitaxial structures. This achievement paves the way to spintronics using electrically conducting rare earth oxides.

Academic Significance and Societal Importance of the Research Achievements

これまで希土類酸化物は、3価の希土類イオンをもつ酸化物がほとんどで、顕著な磁性もなく、電気もほとんど流さない物質と見なされてきた。本研究で、薄膜技術を活用した希土類酸化物の準安定相の合成を活用することにより、2価の希土類イオンをもつ希土類単酸化物が得られるようになった。その結果、希土類単酸化物が高い電気伝導性、超伝導性、低温強磁性や高温強磁性といった、多様な物性を示すことが明らかになった。特に、ガドリニウム単酸化物の示す室温に迫る高温強磁性は、磁性材料としても有望で、他に見つかった希土類単酸化物もスピントロニクスデバイスにも活用できる可能性がある。

Report

(4 results)
  • 2021 Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (51 results)

All 2021 2020 2019 2018 Other

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 1 results) Presentation (38 results) (of which Int'l Joint Research: 21 results,  Invited: 4 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Hard and soft x-ray photoemission spectroscopy study of the new Kondo system SmO thin film2020

    • Author(s)
      Sakamoto Shoya、Kaminaga Kenichi、Oka Daichi、Yukawa Ryu、Horio Masafumi、Yokoyama Yuichi、Yamamoto Kohei、Takubo Kou、Nonaka Yosuke、Koshiishi Keisuke、Kobayashi Masaki、Tanaka Arata、Yasui Akira、Ikenaga Eiji、Wadati Hiroki、Kumigashira Hiroshi、Fukumura Tomoteru、Fujimori Atsushi
    • Journal Title

      Physical Review Materials

      Volume: 4 Issue: 9 Pages: 1-5

    • DOI

      10.1103/physrevmaterials.4.095001

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Rock salt structure GdO epitaxial thin film with a high ferromagnetic Curie temperature2020

    • Author(s)
      Yamamoto Taku、Kaminaga Kenichi、Saito Daichi、Oka Daichi、Fukumura Tomoteru
    • Journal Title

      Applied Physics Letters

      Volume: 117 Issue: 5 Pages: 052402-052402

    • DOI

      10.1063/5.0017954

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Temperature dependence of dielectric functions in Yb2O3 and Lu2O3 epitaxial thin films on sapphire (0001)2019

    • Author(s)
      Makino Takayuki、Asai Takaho、Takeuchi Tomoya、Kaminaga Kenichi、Oka Daichi、Fukumura Tomoteru
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Issue: SC Pages: SCCB13-SCCB13

    • DOI

      10.7567/1347-4065/ab4a88

    • NAID

      210000157259

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Heteroepitaxy of Rock-salt Superconductor/Ferromagnet Thin Film: LaO/EuO2019

    • Author(s)
      Kaminaga Kenichi、Oka Daichi、Oka Hirofumi、Fukumura Tomoteru
    • Journal Title

      Chemistry Letters

      Volume: 48 Issue: 10 Pages: 1244-1247

    • DOI

      10.1246/cl.190460

    • NAID

      130007724104

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Itinerant ferromagnetism in rocksalt NdO epitaxial thin films2019

    • Author(s)
      Saito Daichi、Kaminaga Kenichi、Oka Daichi、Fukumura Tomoteru
    • Journal Title

      Physical Review Materials

      Volume: 3 Issue: 6

    • DOI

      10.1103/physrevmaterials.3.064407

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High electron mobility with significant spin-orbit coupling in rock-salt YbO epitaxial thin film2019

    • Author(s)
      Yamamoto Taku、Kaminaga Kenichi、Saito Daichi、Oka Daichi、Fukumura Tomoteru
    • Journal Title

      Applied Physics Letters

      Volume: 114 Issue: 16 Pages: 162104-162104

    • DOI

      10.1063/1.5085938

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High electron mobility with significant spin-orbit coupling in rock-salt YbO epitaxial thin film2019

    • Author(s)
      Yamamoto Taku, Kaminaga Kenichi, Saito Daichi, Oka Daichi, Fukumura Tomoteru
    • Journal Title

      Applied Physics Letters

      Volume: -

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Two distinct surface terminations of SrVO3 (001) ultrathin films as an influential factor on metallicity2018

    • Author(s)
      Oka Hirofumi、Okada Yoshinori、Hitosugi Taro、Fukumura Tomoteru
    • Journal Title

      Applied Physics Letters

      Volume: 113 Issue: 17 Pages: 171601-171601

    • DOI

      10.1063/1.5051434

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] New Lutetium Oxide: Electrically Conducting Rock-Salt LuO Epitaxial Thin Film2018

    • Author(s)
      Kaminaga Kenichi、Oka Daichi、Hasegawa Tetsuya、Fukumura Tomoteru
    • Journal Title

      ACS Omega

      Volume: 3 Issue: 10 Pages: 12501-12504

    • DOI

      10.1021/acsomega.8b02082

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Superconductivity of Rock-Salt Structure LaO Epitaxial Thin Film2018

    • Author(s)
      Kaminaga Kenichi、Oka Daichi、Hasegawa Tetsuya、Fukumura Tomoteru
    • Journal Title

      Journal of the American Chemical Society

      Volume: 140 Issue: 22 Pages: 6754-6757

    • DOI

      10.1021/jacs.8b03009

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Presentation] Materials discovery for oxide electronics2021

    • Author(s)
      T. Fukumura
    • Organizer
      Seminar at UCL Institute for Materiasl Discovery
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The Interplay of Magnetic and Transport Properties in HoO Epitaxial Thin Film2021

    • Author(s)
      T. Amrillah, D. Oka, T. Fukumura
    • Organizer
      The 4th International Symposium for The Core Research Cluster for Spintronics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Thickness Dependence of Magnetotransport Properties of Rocksalt NdO Epitaxial Thin Films2021

    • Author(s)
      D. Saito, D. Oka, K. Kaminaga, T. Fukumura
    • Organizer
      The 4th International Symposium for The Core Research Cluster for Spintronics
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 新強磁性半導体:岩塩構造希土類単酸化物TbO2021

    • Author(s)
      佐々木 智視,岡 大地, 神永 健一, 齋藤 大地, 阿部 展人, 清水 宙一,福村 知昭
    • Organizer
      第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Competing magnetic orders in PrO epitaxial thin films2020

    • Author(s)
      H. Shimizu, N. Abe, D. Saito, K. Kaminaga, D. Oka, N. Kimura, T. Fukumura
    • Organizer
      PASPS-25 第25回半導体におけるスピン工学の基礎と応用
    • Related Report
      2020 Annual Research Report
  • [Presentation] 近藤格子PrOエピタキシャル薄膜の低温物性2020

    • Author(s)
      清水 宙一,阿部 展人, 山本 卓, 齋藤 大地, 神永 健一, 岡 大地, 木村 憲彰, 福村 知昭
    • Organizer
      第81回応用物理学会秋季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Rock-salt type superconductor/ferromagnet heteroepitaxial junction: LaO/EuO2020

    • Author(s)
      K. Kaminaga, D. Oka, H. Oka, T. Fukumura
    • Organizer
      APS March Meeting 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Observation of high electron mobility with significant spin-orbit coupling in rock-salt YbO epitaxial thin film2020

    • Author(s)
      T. Yamamoto, K. Kaminaga, D. Saito, D. Oka, T. Fukumura
    • Organizer
      APS March Meeting 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Thickness Dependent Magnetotransport Properties of Rocksalt NdO Epitaxial Thin Films2020

    • Author(s)
      Daichi Saito, Kenichi Kaminaga, Daichi Oka, Tomoteru Fukumura
    • Organizer
      GP-Spin Student Seminar
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetotransport Properties in Rocksalt NdO/EuO Heterojunction2020

    • Author(s)
      Daichi Saito, Kenichi Kaminaga, Daichi Oka, Tomoteru Fukumura
    • Organizer
      GP-Spin Student Seminar
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electronic Materials Project in a Core Research Cluster of Material Science2020

    • Author(s)
      Tomoteru Fukumura, Hirofumi Oka
    • Organizer
      The 3rd Symposium for The Core Research Clusters for Materials Science and Spintronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel rare earth monoxides: fundamental properties and electronic states2020

    • Author(s)
      K. Kaminaga, H. Shimizu, N. Abe, T. Yamamoto, D. Saito, D. Oka, D. Shiga, M. Kitamura, H. Horiba, H. Kumigashira, T. Fukumura
    • Organizer
      The 3rd Symposium for The Core Research Clusters for Materials Science and Spintronics
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] スピンホール磁気抵抗を用いたLaOのスピンパラメータの導出2020

    • Author(s)
      神永 健一、岡 大地、岡 博文、福村 知昭
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 岩塩型NdOエピタキシャル薄膜における磁気輸送特性の膜厚依存性2020

    • Author(s)
      齋藤 大地,神永 健一,岡 大地,福村 知昭
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] PrOエピタキシャル薄膜におけるゼロに近い磁化をもつ遍歴強磁性の可能性2020

    • Author(s)
      清水 宙一,阿部 展人, 山本 卓, 齋藤 大地, 神永 健一, 岡 大地, 福村 知昭
    • Organizer
      第67回応用物理学会春季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Effect of Optical and Acoustic Phonons on Optical Properties of Yb2O3 and Lu2O3 Thin Films2019

    • Author(s)
      T. Asai, T. Makino, K. Kaminaga, D. Oka, T. Fukumura
    • Organizer
      Materials Research Meeting 2019 (MRM-2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New ferromagnetic semiconductor: rare-earth monoxide GdO2019

    • Author(s)
      Taku Yamamoto, Kenichi Kaminaga, Daichi Saito, Daichi Oka, Tomoteru Fukumura
    • Organizer
      17th RIEC International Workshop on Spintronics and 10th JSPS Core-to-Core Workshop on "New-Concept Spintronic Devices"
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Heteroepitaxy of rock-salt superconductor/ferromagnet thin film: LaO/EuO2019

    • Author(s)
      K. Kaminaga, D. Oka, H. Oka, T. Fukumura
    • Organizer
      26th International Workshop on Oxide Electronics (iWOE 26)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetization and Magnetotransport Studies of Rocksalt NdO Epitaxial Thin Films with Itinerant Ferromagnetism2019

    • Author(s)
      Daichi Saito, Kenichi Kaminaga, Daichi Oka, Tomoteru Fukumura
    • Organizer
      26th International Workshop on Oxide Electronics (iWOE 26)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Rich electric and magnetic functionalities in rare earth binary oxides2019

    • Author(s)
      T. Fukumura
    • Organizer
      The 11th International Conference on the Science and Technology for Advanced Ceramics (STAC-11)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Temperature Dependence of Dielectric Functions in Yb2O3 and Lu2O3 Thin Films2019

    • Author(s)
      T. Makino, T. Takeuchi, T. Asai, T. Yamamoto, K. Kaminaga, D. Oka, T. Fukumura
    • Organizer
      7th International Symposium on Organic and Inorganic Electronic Materials and Related Nanotechnologies (EM-NANO 2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spin Hall magnetoresistance in LaO/EuO heteroepitaxial junction2019

    • Author(s)
      Kenichi Kaminaga, Daichi Oka, Hirofumi Oka, Tomoteru Fukumura
    • Organizer
      第24回半導体スピン工学の基礎と応用(PASPS-24)
    • Related Report
      2019 Annual Research Report
  • [Presentation] Magnetotransport of Epitaxial Thin Films and Heterojunction of Rocksalt NdO with Itinerant Ferromagnetism2019

    • Author(s)
      Daichi Saito, Kenichi Kaminaga, Daichi Oka, Tomoteru Fukumura
    • Organizer
      第24回半導体スピン工学の基礎と応用(PASPS-24)
    • Related Report
      2019 Annual Research Report
  • [Presentation] 希土類酸化物薄膜のフェムト秒時間分解分光2019

    • Author(s)
      山出拓史, 牧野哲征, 福村知昭, 神永健一, 岡大地
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 希土類単酸化物CeOエピタキシャル薄膜のp型電気輸送特性2019

    • Author(s)
      阿部展人,山本卓,齋藤大地,神永健一,岡大地,福村知昭
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] LaO/EuOヘテロエピタキシャル薄膜のスピンホール磁気抵抗2019

    • Author(s)
      神永 健一、岡 大地、岡 博文、福村 知昭
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 新高温強磁性半導体:希土類単酸化物GdO2019

    • Author(s)
      山本 卓,神永 健一,斎藤 大地,岡 大地,福村 知昭
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Magnetization and Magnetotransport Studies of an Itinerant Ferromagnet Rocksalt NdO Epitaxial Thin Films2019

    • Author(s)
      D. Saito, K. Kaminaga, D. Oka, T. Fukumura
    • Organizer
      Tohoku University GP-Spin seminar 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Carrier and epitaxial strain control of superconductivity in LaO thin film2019

    • Author(s)
      K. Kaminaga, D. Oka, T. Hasegawa, T. Fukumura
    • Organizer
      APS 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Electrically conducting rock-salt LuO epitaxial thin film2019

    • Author(s)
      K. Kaminaga, D. Oka, T. Hasegawa, T. Fukumura
    • Organizer
      APS 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] New functional rare earth binary oxides2019

    • Author(s)
      T. Fukumura
    • Organizer
      Second Workshop of SG-SPIN
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Oxide electronics: converting insulators into electronic materials2019

    • Author(s)
      T. Fukumura
    • Organizer
      JSPS San Fransisco's 15-Year Anniversary Event: World Premier Research in Japan
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 岩塩型超伝導/強磁性ヘテロエピタキシャル薄膜:LaO/EuO2019

    • Author(s)
      神永 健一, 岡 大地, 岡 博文, 福村 知昭
    • Organizer
      第66回応用物理学会春季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 希土類酸化物薄膜のフェムト秒時間分解分光2018

    • Author(s)
      和座一憲, 牧野哲征, 福村 知昭, 神永健一, 岡大地
    • Organizer
      平成30年度応用物理学会 北陸・信越支部学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] High electron conductivity in YbO epitaxial thin films2018

    • Author(s)
      T. Yamamoto, D. Saito, K. Kaminaga, D. Oka, T. Fukumura
    • Organizer
      Tohoku University's Chemistry Summer School 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 電気伝導性希土類単酸化物とBi 正方格子超伝導体の開拓2018

    • Author(s)
      山本 卓, 松本倖太, 齋藤大地, 寺門恭兵, 神永健一, 河底秀幸, 岡 大地, 福村知昭
    • Organizer
      第12回 物性科学領域横断研究会(領域合同研究会)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 異常原子価NdOエピタキシャル薄膜の強磁性と異常ホール効果2018

    • Author(s)
      齋藤 大地、神永 健一、岡 大地、福村 知昭
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Annual Research Report
  • [Presentation] エピタキシーを活用した準安定酸化物の合成2018

    • Author(s)
      岡大地・神永健一・福田慎太郎・齋藤大地・佐波勇希・山本卓・遊佐昴・阿部展人・徳永凌祐・福村知昭
    • Organizer
      新学術領域研究「3D活性サイト科学」 春の学校2018
    • Related Report
      2018 Annual Research Report
  • [Book] 月刊 化学 Vol.73 No.112018

    • Author(s)
      神永健一、福村知昭
    • Total Pages
      2
    • Publisher
      化学同人
    • Related Report
      2018 Annual Research Report
  • [Remarks] ランタン酸化物の超伝導体化に成功 高温超伝導体の絶縁ナノブロック層が超伝導を発現

    • URL

      https://www.tohoku.ac.jp/japanese/2018/06/press20180608-lanthanum.html

    • Related Report
      2018 Annual Research Report
  • [Remarks] ランタン酸化物の超伝導体化に成功

    • URL

      https://www.wpi-aimr.tohoku.ac.jp/jp/news/press/2018/20180608_001068.html

    • Related Report
      2018 Annual Research Report

URL: 

Published: 2018-04-23   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi