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Interfacial structure control for domain wall memories with low-power consumption

Research Project

Project/Area Number 20H02196
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionIbaraki University

Principal Investigator

Komine Takashi  茨城大学, 応用理工学野, 准教授 (90361287)

Co-Investigator(Kenkyū-buntansha) 青野 友祐  茨城大学, 理工学研究科(工学野), 教授 (20322662)
長谷川 靖洋  埼玉大学, 理工学研究科, 准教授 (60334158)
千葉 貴裕  東北大学, 学際科学フロンティア研究所, 助教 (90803297)
Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2022: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Keywordsスピントロニクス / トポロジカル絶縁体 / 不揮発性メモリ / スピン軌道トルク / 磁気異方性 / 界面制御 / 電界制御 / 磁気メモリ / 低消費電力 / 磁壁移動型メモリ / 低電力動作 / 磁性絶縁体 / ダンピング定数の電界制御 / スピン波情報処理 / 閾値電流 / 磁気トポロジカル絶縁体 / 磁気異方性の電界制御 / FET型メモリ素子
Outline of Research at the Start

磁壁移動型メモリ実現のためには,低消費電力・高速動作を両立する必要があり,スピン軌道トルクの積極的な利用に加えて,磁壁ピニングを抑制する構造上の工夫が必要である.本研究では,電荷-スピン変換を磁壁に効率よく伝達するため,トポロジカル絶縁体と磁性体の界面状態を理解する.磁性層/トポロジカル絶縁層界面の電子状態解析,及び,異常ホール抵抗のハーモニック解析を通じて,大きな界面スピン軌道トルクを誘起するための材料および界面制御方法を探索する.低電流駆動およびロバストネス向上のため,磁壁ピニング効果を抑制するための軟磁性被覆構造も併行して検討し,低消費電力・高速動作を両立する基本原理を明らかにする.

Outline of Final Research Achievements

This study investigated a new device structure that effectively utilizes spin-orbit torque at the interface to create a spintronic device that achieves low power consumption and high-speed operation. Controlling the voltage of the interface state between a magnetic insulator and a topological insulator makes it possible to induce spin-orbit torque. Furthermore, we revealed the feasibility of controlling magnetic anisotropy by voltage using spin-momentum locking of the interface state. As a result, the gate voltage allows simultaneous control of magnetic anisotropy and spin-orbit torque. We proposed such a magnetic topological insulator element and analyzed the magnetization reversal, and we found that it can operate with lower power than a magnetic tunnel junction. We also performed magnetization reversal simulations under thermal fluctuations and illuminated that a write error rate sufficient for practical use in 100 nm scale devices is possible.

Academic Significance and Societal Importance of the Research Achievements

低消費電力・高速動作を両立するスピントロニクスデバイスの創出は、爆発的に増大し続ける情報に伴うエネルギー消費を劇的に軽減する手法として注目されており、近年需要増大が目覚ましいデータセンターやエッジコンピューティングへの活用が期待されている。本研究では、提案する磁性トポロジカル絶縁体素子を用いることで、低消費電力・高速・高信頼性動作を実現出来る可能性を明らかにし、新たなスピントロニクスデバイス創出のブレークスルーになると期待される。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • 2020 Annual Research Report
  • Research Products

    (44 results)

All 2024 2023 2022 2021 2020 Other

All Int'l Joint Research (2 results) Journal Article (15 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 15 results,  Open Access: 7 results) Presentation (26 results) (of which Int'l Joint Research: 14 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] Universidad Tecnologica Metropolitana(チリ)

    • Related Report
      2022 Annual Research Report
  • [Int'l Joint Research] Universidad tecnolo'gica metropolitana(チリ)

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Ultrastrong-coupled magnon?polariton in a dynamical inductor based on magnetic-insulator/topological-insulator bilayers2024

    • Author(s)
      Chiba Takahiro、Komine Takashi、Aono Tomosuke
    • Journal Title

      Applied Physics Letters

      Volume: 124 Issue: 1 Pages: 012402-012402

    • DOI

      10.1063/5.0173898

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fully micromagnetic analysis of voltage-controlled magnetization switching in magnetic-topological-insulator-based devices2024

    • Author(s)
      Komine Takashi、Chiba Takahiro
    • Journal Title

      AIP Advances

      Volume: 14 Issue: 2 Pages: 025132-025132

    • DOI

      10.1063/9.0000798

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Composition dependence of anomalous Nernst effect in amorphous TbFeCo thin films with perpendicular magnetic anisotropy2024

    • Author(s)
      Ando Ryo、Komine Takashi
    • Journal Title

      Journal of Applied Physics

      Volume: 135 Issue: 9 Pages: 093906-093906

    • DOI

      10.1063/5.0189969

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Magnetic printing characteristics of burst signals by using double magnet master media2024

    • Author(s)
      Komine Takashi
    • Journal Title

      AIP Advances

      Volume: 14 Issue: 3 Pages: 035138-035138

    • DOI

      10.1063/9.0000792

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Combinatorial dependence of magnetic printing characteristics in double magnet master media for energy-assisted magnetic recording2023

    • Author(s)
      Komine Takashi
    • Journal Title

      AIP Advances

      Volume: 13 Issue: 2 Pages: 025310-025310

    • DOI

      10.1063/9.0000480

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Temperature profile of the Thomson-effect-induced heat release/absorption in junctionless single conductors2023

    • Author(s)
      Chiba Takahiro、Iguchi Ryo、Komine Takashi、Hasegawa Yasuhiro、Uchida Ken-ichi
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 62 Issue: 3 Pages: 037001-037001

    • DOI

      10.35848/1347-4065/acc3e6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Numerical analysis of voltage-controlled magnetization switching operation in magnetic-topological-insulator-based devices2023

    • Author(s)
      Komine Takashi、Chiba Takahiro
    • Journal Title

      Applied Physics Letters

      Volume: 123 Issue: 10 Pages: 102404-102404

    • DOI

      10.1063/5.0162297

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Master Structure Dependence of Double Magnet Master on Performance of Magnetic Printing Onto Energy-Assisted Magnetic Recording Media2022

    • Author(s)
      Komine Takashi
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 58 Issue: 8 Pages: 1-5

    • DOI

      10.1109/tmag.2022.3147910

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Room-temperature magnetoresistance in Ni78Fe22/C8-BTBT/Ni78Fe22 nanojunctions fabricated from magnetic thin-film edges using a novel technique2022

    • Author(s)
      Matsuzaka Mizuki、Sasaki Yuma、Hayashi Kyohei、Misawa Takahiro、Komine Takashi、Akutagawa Tomoyuki、Fujioka Masaya、Nishii Junji、Kaiju Hideo
    • Journal Title

      Nanoscale Advances

      Volume: 4 Issue: 22 Pages: 4739-4747

    • DOI

      10.1039/d2na00442a

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Double Magnet Master Media for Magnetic Printing Onto Energy-Assisted Magnetic Recording Media2022

    • Author(s)
      Komine Takashi
    • Journal Title

      IEEE Transactions on Magnetics

      Volume: 58 Issue: 2 Pages: 1-5

    • DOI

      10.1109/tmag.2021.3082515

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A Novel Technique for Controlling Anisotropic Ion Diffusion: Bulk Single‐Crystalline Metallic Silicon Clathrate2022

    • Author(s)
      Iwasaki Suguru、Morito Haruhiko、Komine Takashi、Morita Kazuki、Shibuya Taizo、Nishii Junji、Fujioka Masaya
    • Journal Title

      Advanced Materials

      Volume: 34 Issue: 9 Pages: 2106754-2106754

    • DOI

      10.1002/adma.202106754

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Voltage-control of damping constant in magnetic-insulator/topological-insulator bilayers2021

    • Author(s)
      Chiba Takahiro、Leon Alejandro O.、Komine Takashi
    • Journal Title

      Applied Physics Letters

      Volume: 118 Issue: 25 Pages: 252402-252402

    • DOI

      10.1063/5.0046217

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Elemental Topological Dirac Semimetal α‐Sn with High Quantum Mobility2021

    • Author(s)
      Anh Le Duc、Takase Kengo、Chiba Takahiro、Kota Yohei、Takiguchi Kosuke、Tanaka Masaaki
    • Journal Title

      Advanced Materials

      Volume: 33 Issue: 51 Pages: 2104645-2104645

    • DOI

      10.1002/adma.202104645

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Voltage-Driven Magnetization Switching via Dirac Magnetic Anisotropy and Spin-Orbit Torque in Topological-Insulator-Based Magnetic Heterostructures2020

    • Author(s)
      Chiba Takahiro、Komine Takashi
    • Journal Title

      Physical Review Applied

      Volume: 14 Issue: 3

    • DOI

      10.1103/physrevapplied.14.034031

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Thermoelectric refrigerator based on asymmetric surfaces of a magnetic topological insulator2020

    • Author(s)
      Chiba Takahiro、Komine Takashi
    • Journal Title

      AIP Advances

      Volume: 10 Issue: 12 Pages: 125230-125230

    • DOI

      10.1063/9.0000005

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Write-error rate estimation of voltage-controlled magnetization switching in a magnetic-topological-insulator-based device2023

    • Author(s)
      T. Komine, S. Watahiki, and T. Chiba
    • Organizer
      2023 Intermag Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] TbFeCo磁性薄膜の異常ネルンスト効果に寄与する因子分析2023

    • Author(s)
      安藤亮,小峰啓史
    • Organizer
      第84回 応用物理学会秋季学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] トポロジカル絶縁体/磁性絶縁体二層膜における強結合磁気共鳴2023

    • Author(s)
      千葉貴弘,小峰啓史,青野友祐
    • Organizer
      第47回 日本磁気学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] アモルファスTbFeCo 磁性薄膜における熱電テンソルの組成依存性2023

    • Author(s)
      小峰啓史,安藤亮
    • Organizer
      第47回 日本磁気学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] ダブルマグネット型マスター媒体によるバースト信号の転写特性2023

    • Author(s)
      小峰啓史
    • Organizer
      第47回 日本磁気学会学術講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Voltage-control of magnetization dynamics by using topological insulators2023

    • Author(s)
      T. Komine, and T. Chiba
    • Organizer
      第47回 日本磁気学会学術講演会 / Symposium on "Advanced local probe techniques in nanoscaled magnetism"
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Numerical analysis of write-error-rate in magnetic-topological-insulator-based devices with voltage-controlled magnetization switching2023

    • Author(s)
      T. Komine, and T. Chiba
    • Organizer
      The 68th Annual Magnetism and Magnetic Materials (MMM) Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Magnetic printing characteristics of burst signals by using double magnet mater media2023

    • Author(s)
      T. Komine
    • Organizer
      The 68th Annual Magnetism and Magnetic Materials (MMM) Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 磁性トポロジカル絶縁体素子の電圧制御磁化反転における書き込みエラー率の数値解析2023

    • Author(s)
      小峰啓史,綿引詩門,千葉貴裕
    • Organizer
      第70回 応用物理学会春季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Observation of magnetoresistance in Ni78Fe22/C8-BTBT/Ni78Fe22 nanojunctions at room temperature2022

    • Author(s)
      M. Matsuzaka, Y. Sasaki, K. Hayashi, T. Misawa, T. Komine, T. Akutagawa, M. Fujioka, J. Nishii, H. Kaiju
    • Organizer
      第83回 応用物理学会秋季学術講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Type-II Na-Siクラスレートにおける Naイオンの拡散機構解明2022

    • Author(s)
      岩﨑秀,小峰啓史,森田一軌,澁谷泰蔵,森戸春彦,藤岡正弥
    • Organizer
      2022年秋期講演大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Room-temperature magnetoresistance in Ni78Fe22/C8-BTBT/Ni78Fe22 nanojunctions fabricated using magnetic thin-film edges2022

    • Author(s)
      M. Matsuzaka, Y. Sasaki, K. Hayashi, T. Misawa, T. Komine, T. Akutagawa, M. Fujioka, J. Nishii, H. Kaiju
    • Organizer
      35th International Microprocesses and Nanotechnology Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Combination dependence of printing characteristics in double magnet master media for energy-assisted magnetic recording2022

    • Author(s)
      T. Komine
    • Organizer
      The 67th Annual Magnetism and Magnetic Materials (MMM) Conference
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] トポロジカル絶縁体を活用した磁化ダイナミクスの電圧制御とその応用2022

    • Author(s)
      千葉貴裕,アレハンドロ・レオン,小峰啓史
    • Organizer
      第240回研究会/第95回ナノマグネティックス専門研究会 「磁気物性に関する計算科学の最前線」
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Observation of spin signal in molecular nanojunctions utilizing magnetic thin-film edges at room temperature2022

    • Author(s)
      M. Matsuzaka, Y. Sasaki, K. Hayashi, T. Misawa, T. Komine, T. Akutagawa, M. Fujioka, J. Nishii, H. Kaiju
    • Organizer
      The 23rd RIES-Hokudai International Symposium
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Voltage-control of magnetic properties in topological-insulator/magnetic-insulator bilayers2022

    • Author(s)
      T. Chiba, A. O. Leon, T. Komine
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Master structure dependence of double magnet master on magnetic printing performance onto energy-assisted magnetic recording media2022

    • Author(s)
      T. Komine
    • Organizer
      2022 Joint MMM-Intermag Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Double magnet master media for magnetic printing onto energy-assisted magnetic recording media2021

    • Author(s)
      T. Komine
    • Organizer
      INTERMAG 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ダブルマグネット型マスター媒体による磁気転写特性のマスター構造依存性2021

    • Author(s)
      小峰啓史
    • Organizer
      第45回日本磁気学会学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Voltage-Control of Magnetization Dynamics in Topological-insulator-based Magnetic Heterostructures2021

    • Author(s)
      T. Chiba, Alejandro O. Leon, T. Komine
    • Organizer
      Joint Conference: 24th International Conference on Electronic Properties of Two-Dimensional Systems / 20th International Conference on Modulated Semiconductor Structures
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Voltage-Control of Magnetization Dynamics in Topological-insulator-based Magnetic Heterostructures2021

    • Author(s)
      T. Chiba, A. O. Leon, T. Komine
    • Organizer
      26th Physics and Applications of Spin-related Phenomena in Semiconductors
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ambipolar Seebeck power generator based on asymmetric surfaces of magnetic topological insulators2020

    • Author(s)
      T. Chiba, S. Takahashi, T. Komine
    • Organizer
      The 65th Annual Magnetism and Magnetic Materials
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Voltage-control of Spin-Orbit Torque and Magnetic Anisotropy in Topological Insulator Heterostructures2020

    • Author(s)
      T. Chiba, T. Komine
    • Organizer
      The 65th Annual Magnetism and Magnetic Materials
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Spin Transport Properties in Ni78Fe22/Mq3 (M=Al, Er)/Ni78Fe22 Nanoscale Junction Devices Utilizing Magnetic Thin-Film Edges2020

    • Author(s)
      . Senshu, Y. Sasaki, Y. Nakayama, T. Misawa, T. Komine, N. Hoshino, T. Akutagawa, M. Fujioka, J. Nishii and H. Kaiju
    • Organizer
      33rd International Microprocesses and Nanotechnology Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ni78Fe22/Mq3(M = Al, Er)/Ni78Fe22 ナノ接合素子における室温磁気抵抗効果2020

    • Author(s)
      千秋賀英子,佐々木悠馬,中山雄介,三澤貴浩,小峰啓史,星野哲久, 芥川智行,藤岡正弥,西井準治,海住英生
    • Organizer
      第44回 日本磁気学会学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 界面ディラック電子に起因した磁気異方性に基づく電圧制御磁化反転2020

    • Author(s)
      千葉貴裕,小峰啓史
    • Organizer
      第68回 応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Remarks] 新機能性材料研究室

    • URL

      http://dirac.dmt.ibaraki.ac.jp

    • Related Report
      2023 Annual Research Report

URL: 

Published: 2020-04-28   Modified: 2025-01-30  

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