Magnetic domain wall motion induced by electric field

• Project/Area Number: 15H05419
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Applied materials
• Research Institution: The University of Tokyo
• Principal Investigator: Koyama Tomohiro 東京大学, 大学院工学系研究科(工学部), 助教 (60707537)
• Project Period (FY): 2015-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥24,570,000 (Direct Cost: ¥18,900,000、Indirect Cost: ¥5,670,000); Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2017: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000); Fiscal Year 2016: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000); Fiscal Year 2015: ¥13,260,000 (Direct Cost: ¥10,200,000、Indirect Cost: ¥3,060,000)
• Keywords: 磁壁ダイナミクス / 磁性の電界制御 / 強磁性薄膜 / スピントロニクス / 磁壁 / 電界制御 / スピンエレクトロニクス / スピン軌道相互作用 / 磁性 / 磁気記録 / 物性実験 / 磁壁駆動

Outline of Final Research Achievements

Electric field control of magnetic domain wall (DW) has been investigated in this project. The main achievements of this study are listed as follows.
1. Electric control of fast DW motion via the modulation of Dzyalosinskii-Moriya interaction has been demonstrated [Science Advances (2018)]. 2．It has been found that the sign of coercivity change by electric field depends on the magnetization process (DW propagation dominant or nucleation dominant) [Phys. Rev. B (2017)]. 3. Using electric field induced phase transition and ferromagnetic gate electrode, the magnetic domain writing without external magnetic field has been realized in ferromagnetic wire [Appl. Phys. express (2018)].

Academic Significance and Societal Importance of the Research Achievements

高度情報化社会を迎えた現在、電界効果を利用した磁壁移動制御は、磁気メモリのさらなる高速化・消費電力化を可能にする将来の基盤技術として期待されている。本研究成果は、メモリにおける電力消費のかなりの割合を占める情報書き込み動作の省エネ化に貢献し、を実用に要求されるレベルの高速磁壁移動をも電界で制御可能であることを示した点で社会的意義は大きい。また、高速磁壁移動の電界制御は世界初であるとともに、長らく未解決であった保磁力変化の符号反転に一つの答えを導き出したことは学術的に重要である。

Research Products

• [Journal Article] Microscopic Investigation into the Electric Field Effect on Proximity-Induced Magnetism in Pt (2018)
  • Author(s): K.T. Yamada, M. Suzuki, A.-M. Pradipto, T. Koyama, S. Kim, K.-J. Kim, S. Ono, T. Taniguchi, H. Mizuno, F. Ando, K. Oda, H. Kakizakai, T. Moriyama, K. Nakamura, D. Chiba, and T. Ono
  • Journal Title: Physical Revew Letters Volume: 120 Issue: 15 Pages: 157203-157203
  • DOI: 10.1103/physrevlett.120.157203
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electric-field-induced magnetic domain writing in a Co wire (2018)
  • Author(s): Y. Tanaka, T. Hirai, T. Koyama, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 11 Issue: 5 Pages: 053005-053005
  • DOI: 10.7567/apex.11.053005
  • NAID: 210000136196
  • Peer Reviewed / Open Access
• [Journal Article] Correlation of the Dzyaloshinskii?Moriya interaction with Heisenberg exchange and orbital asphericity (2018)
  • Author(s): Kim Sanghoon、Ueda Kohei、Go Gyungchoon、Jang Peong-Hwa、Lee Kyung-Jin、Belabbes Abderrezak、Manchon Aurelien、Suzuki Motohiro、Kotani Yoshinori、Nakamura Tetsuya、Nakamura Kohji、Koyama Tomohiro、Chiba Daichi、Yamada Kihiro. T.、Kim Duck-Ho、Moriyama Takahiro、Kim Kab-Jin、Ono Teruo
  • Journal Title: Nature Communications Volume: 9 Issue: 1 Pages: 1648-1648
  • DOI: 10.1038/s41467-018-04017-x
  • NAID: 120006462508
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Electric field effect on exchange interaction in ultrathin Co films with ionic liquids (2018)
  • Author(s): Ishibashi Mio、Yamada Kihiro T.、Shiota Yoichi、Ando Fuyuki、Koyama Tomohiro、Kakizakai Haruka、Mizuno Hayato、Miwa Kazumoto、Ono Shimpei、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Issue: 6 Pages: 063002-063002
  • DOI: 10.7567/apex.11.063002
  • NAID: 210000136240
  • Peer Reviewed
• [Journal Article] Microscopic origin of electric-field-induced modulation of Curie temperature in cobalt (2018)
  • Author(s): Ando Fuyuki、Yamada Kihiro T.、Koyama Tomohiro、Ishibashi Mio、Shiota Yoichi、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Express Volume: 11 Issue: 7 Pages: 073002-073002
  • DOI: 10.7567/apex.11.073002
  • NAID: 210000136281
  • Peer Reviewed
• [Journal Article] Electric field effect on magnetism in a MgO/Pd/Co system with a solid-state capacitor structure (2018)
  • Author(s): Obinata Aya、Hirai Takamasa、Kotani Yoshinori、Toyoki Kentaro、Nakamura Tetsuya、Koyama Tomohiro、Chiba Daichi
  • Journal Title: AIP Advances Volume: 8 Issue: 11 Pages: 115122-115122
  • DOI: 10.1063/1.5039680
  • Peer Reviewed / Open Access
• [Journal Article] Magnetic domain writing defined by electrical gating in Pt/Co film (2018)
  • Author(s): Ando Fuyuki、Ishibashi Mio、Koyama Tomohiro、Shiota Yoichi、Moriyama Takahiro、Chiba Daichi、Ono Teruo
  • Journal Title: Applied Physics Letters Volume: 113 Issue: 25 Pages: 252402-252402
  • DOI: 10.1063/1.5078553
  • NAID: 130007736749
  • Peer Reviewed
• [Journal Article] Electric field control of magnetic domain wall motion via modulation of the Dzyaloshinskii-Moriya interaction (2018)
  • Author(s): Koyama Tomohiro、Nakatani Yoshinobu、Ieda Jun’ichi、Chiba Daichi
  • Journal Title: Science Advances Volume: 4 Issue: 12 Pages: 1-5
  • DOI: 10.1126/sciadv.aav0265
  • Peer Reviewed / Open Access
• [Journal Article] Electric-field effect on magnetic anisotropy in Pt/Co/Pd/MgO structures deposited on GaAs and Si substrates (2018)
  • Author(s): Y. Hayashi, Y. Hibino, F. Matsukura, K. Miwa, S. Ono, T. Hirai, T. Koyama, H. Ohno, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 11 Issue: 1 Pages: 0130031-3
  • DOI: 10.7567/apex.11.013003
  • NAID: 210000136076
  • Peer Reviewed
• [Journal Article] Control of magnetism by electrical charge doping or redox reactions in a surface-oxidized Co thin film with a solid-state capacitor structure (2018)
  • Author(s): T. Hirai, T. Koyama, and D. Chiba
  • Journal Title: Applied Physics Letters Volume: 112 Issue: 12 Pages: 1224081-5
  • DOI: 10.1063/1.5020932
  • Peer Reviewed
• [Journal Article] Current-induced magnetic domain wall motion in Pt/Co/Pd and Pd/Co/Pt structures with opposite sign of Dzyaloshinskii-Moriya interaction (2017)
  • Author(s): Y. Guan, T. Koyama, and D. Chiba
  • Journal Title: AIP advances Volume: 7 Issue: 8 Pages: 0851231-3
  • DOI: 10.1063/1.4986264
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Enhancement of the spin-orbit torque in a Pt/Co system with a naturally oxidized Co layer (2017)
  • Author(s): Y. Hibino, T. Koyama, S. Sumi, H. Awano, K. Miwa, S. Ono, M. Kohda, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 111 Issue: 13 Pages: 1324041-5
  • DOI: 10.1063/1.4995292
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Electric-field-induced on/off switching of the Faraday effect (2017)
  • Author(s): Y. Hibino, T. Koyama, S. Sumi, H. Awano, K. Miwa, S. Ono, M. Kohda, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 10 Issue: 12 Pages: 1232011-4
  • DOI: 10.7567/apex.10.123201
  • NAID: 210000136044
  • Peer Reviewed
• [Journal Article] Influence of the magnetization reversal mechanism on the electric field modulation of coercivity in Pt/Co structures (2017)
  • Author(s): T. Koyama and D. Chiba
  • Journal Title: Physical Revew B Volume: 96 Issue: 22 Pages: 2244091-4
  • DOI: 10.1103/physrevb.96.224409
  • Peer Reviewed
• [Journal Article] Electrical control of superparamagnetism (2017)
  • Author(s): Kihiro T. Yamada, Tomohiro Koyama, Haruka Kakizakai, Kazumoto Miwa, Fuyuki Ando, Mio Ishibashi, Kab-Jin Kim, Takahiro Moriyama, Shimpei Ono, Daichi Chiba
  • Journal Title: Applied Physics Express Volume: 10 Issue: 1 Pages: 013004-013004
  • DOI: 10.7567/apex.10.013004
  • NAID: 210000135726
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetization switching by spin-orbit torque in Pt with proximity-induced magnetic moment (2017)
  • Author(s): T. Koyama, Y. Guan, Y. Hibino, M. Suzuki, and D. Chiba
  • Journal Title: Journal of Applied Physics Volume: 121 Issue: 12 Pages: 123903-123903
  • DOI: 10.1063/1.4978965
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Switching local magnetization by electric-field-induced domain wall motion (2016)
  • Author(s): Haruka Kakizakai, Fuyuki Ando, Tomohiro Koyama, Kihiro Yamada, Masashi Kawaguchi, Sanghoon Kim, Kab-Jin Kim, Takahiro Moriyama, Daichi Chiba, and Teruo Ono
  • Journal Title: Applied Physics Express Volume: 9 Issue: 6 Pages: 063004-063004
  • DOI: 10.7567/apex.9.063004
  • NAID: 210000137938
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Control of magnetic anisotropy in Pt/Co system using ionic liquid gating (2016)
  • Author(s): T. Hirai, T. Koyama, A. Obinata, Y. Hibino, K. Miwa, S. Ono, M. Kohda, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 9 Issue: 6 Pages: 063007-063007
  • DOI: 10.7567/apex.9.063007
  • NAID: 210000137941
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Modulation of the magnetic domain size induced by an electric field (2016)
  • Author(s): F. Ando, H. Kakizakai, T. Koyama, K. Yamada, M. Kawaguchi, S. Kim, K.-J. Kim, T. Moriyama, D. Chiba, and T. Ono
  • Journal Title: Appl. Phys. Lett. Volume: 109 Issue: 2 Pages: 022401-022401
  • DOI: 10.1063/1.4955265
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Peculiar temperature dependence of electric-field effect on magnetic anisotropy in Co/Pd/MgO system (2016)
  • Author(s): Y. Hibino, T. Koyama, A. Obinata, T. Hirai, S. Ota, K. Miwa, S. Ono, F. Matsukura, H. Ohno, and D. Chiba
  • Journal Title: Applied Physics Letters Volume: 109 Issue: 8 Pages: 082403-082403
  • DOI: 10.1063/1.4961621
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Stress-induced large anisotropy field modulation in Ni films deposited on a flexible substrate (2016)
  • Author(s): R. Asai, S. Ota, T. Namazu, T. Takenobu, T. Koyama, D. Chiba
  • Journal Title: J. Appl. Phys. Volume: 120 Issue: 8 Pages: 083906-083906
  • DOI: 10.1063/1.4961564
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Spin-dependent transport and current modulation in a current-in-plane spin-valve field-effect transistor (2016)
  • Author(s): T. Kanaki, T. Koyama, D. Chiba, S. Ohya, and M. Tanaka
  • Journal Title: Applied Physics Letters Volume: 109 Issue: 15 Pages: 1524031-4
  • DOI: 10.1063/1.4964419
  • Peer Reviewed
• [Journal Article] Dielectric and magnetic characterizations of capacitor structures with an ionic liquid/MgO barrier and a ferromagnetic Pt electrode (2016)
  • Author(s): D. Hayakawa, A. Obinata, K. Miwa, S. Ono, T. Hirai, T. Koyama, and D. Chiba
  • Journal Title: AIP Advances Volume: 6 Issue: 11 Pages: 115305-115305
  • DOI: 10.1063/1.4967343
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Confirmation of no structural and chemical changes in Curie temperature variable Co ultrathin films by electric field (2016)
  • Author(s): Y.Wakabayashi, H.Fujii, T.Kimura, O.Sakata, H.Tajiri, T.Koyama, and D.Chiba
  • Journal Title: Z. Phys. Chem. Volume: 230 Issue: 4 Pages: 569-575
  • DOI: 10.1515/zpch-2015-0648
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Strain-induced reversible modulation of the magnetic anisotropy in perpendicularly magnetized metals deposited on a flexible substrate (2016)
  • Author(s): Shinya Ota, Yuki Hibino, Do Bang, Hiroyuki Awano, Takahiro Kozeki, Hirokazu Akamine, Tatsuya Fujii, Takahiro Namazu, Taishi Takenobu, Tomohiro Koyama, Daichi Chiba
  • Journal Title: Applied Physics Express Volume: 22 Issue: 4 Pages: 43004-43004
  • DOI: 10.7567/apex.9.043004
  • NAID: 210000137854
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Ferromagnetic resonance measurements in sub-nanometer Fe films (2015)
  • Author(s): H. Mizuno, T. Moriyama, M. Kawaguchi, M. Nagata, K. Tanaka, T. Koyama, D. Chiba, and T. Ono
  • Journal Title: Applied Physics Express Volume: 8 Issue: 7 Pages: 073003-073003
  • DOI: 10.7567/apex.8.073003
  • NAID: 210000137585
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Electric-field control of magnetic moment in Pd (2015)
  • Author(s): A. Obinata, Y. Hibino, D. Hayakawa, T. Koyama, K. Miwa, S. Ono, and D. Chiba
  • Journal Title: Scientific Reports Volume: 5 Issue: 1 Pages: 143031-9
  • DOI: 10.1038/srep14303
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Electric-Field Modulation of Magnetic Anisotropy in Perpendicularly Magnetized Pt/Co Structure with a Pd Top Layer (2015)
  • Author(s): Y. Hibino, T. Koyama, A. Obinata, K. Miwa, S. Ono, and D. Chiba
  • Journal Title: Applied Physics Express Volume: 8 Issue: 11 Pages: 1130021-3
  • DOI: 10.7567/apex.8.113002
  • NAID: 210000135861
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Determination of effective field induced by spin-orbit torque using magnetic domain wall creep in Pt/Co structure (2015)
  • Author(s): T. Koyama and D. Chiba
  • Journal Title: Physical Revew B Volume: 92 Issue: 22
  • DOI: 10.1103/physrevb.92.220402
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] 磁壁ダイナミクスの電界制御 (2019)
  • Author(s): 小山知弘
  • Organizer: 東北大学電気通信研究所共同プロジェクト発表会
  • Invited
• [Presentation] Electric field effect on exchange interaction in ultra-thin Co films with ionic liquids (2018)
  • Author(s): M. Ishibashi, K. Yamada, Y. Shiota, F. Ando, T. Koyama, H. Kakizakai, H. Mizuno, K. Miwa, S. Ono, T. Moriyama, D. Chiba, T. Ono
  • Organizer: International Conference on Magnetism(ICM2018)
  • Int'l Joint Research
• [Presentation] Magnetic domain writing defined by electrical gating in Pt/Co film. (2018)
  • Author(s): F. Ando, M. Ishibashi, T. Koyama, Y. Shiota, T. Moriyama, D. Chiba, T. Ono
  • Organizer: International Conference on Magnetism(ICM2018)
  • Int'l Joint Research
• [Presentation] Magnetic domain writing defined by electrical gating in pt/co film (2018)
  • Author(s): F. Ando, M. Ishibashi, T. Koyama, Y. Shiota, T. Moriyama, D. Chiba, T. Ono
  • Organizer: the 23rd International Colloquium on Magnetic Films and Surfaces (ICMFS-2018)
  • Int'l Joint Research
• [Presentation] Electric field control of proximity-induced magnetic moment in Pd with solid-state gating (2018)
  • Author(s): A. Obinata, T. Hirai, T. Koyama, and D. Chiba
  • Organizer: 10th International School and Conference on Physics and Applications of Spin Phenomena in Solids (PASPS10)
  • Int'l Joint Research
• [Presentation] Electric field modulation of magnetic domain wall velocity in Pt/Co/Pd structure (2018)
  • Author(s): T. Koyama, Y. Nakatani, J. Ieda, D. Chiba
  • Organizer: 9th Joint European Magnetic Symposia (JEMS) 2018
  • Int'l Joint Research
• [Presentation] Electric field effect on magnetic domain wall motion in Pt/Co/Pd structures (2018)
  • Author(s): T. Koyama, D. Chiba
  • Organizer: 第65回応用物理学会春季学術講演会
• [Presentation] Manipulation of magnetic domain and domain wall using electrical current (2017)
  • Author(s): T. Koyama
  • Organizer: The Collaborative Conference on Spin Dynamics
  • Int'l Joint Research / Invited
• [Presentation] Control of magnetic domain structure using spin orbit torque (2017)
  • Author(s): T. Koyama, Y. Guan, and D. Chiba
  • Organizer: Junjiro Kanamori Memorial International Symposium
  • Int'l Joint Research
• [Presentation] Magnetization switching and domain wall motion induced by current-induced torque in perpendicularly magnetized materials (2016)
  • Author(s): T. Koyama
  • Organizer: EMN Meeting on Spintronics
  • Place of Presentation: South point Hotel, LasVegas (USA)
  • Year and Date: 2016-10-12
  • Int'l Joint Research / Invited
• [Presentation] Bistable magnetization switching induced by the spin-orbit torque in Pt/Co/Pd structure against the thermal disturbance (2016)
  • Author(s): T. Koyama, Y. Guan, and D. Chiba
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 朱鷺メッセ 新潟県新潟市
  • Year and Date: 2016-09-16
• [Presentation] Determination of spin-orbit torque effective field from magnetic domain wall creep velocity (2016)
  • Author(s): T. Koyama and D. Chiba
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学大岡山キャンパス(東京都目黒区)
  • Year and Date: 2016-03-22
• [Presentation] Electric field control of magnetic moment in palladium (2015)
  • Author(s): A. Obinata, Y. Hibino, T. Koyama, K. Miwa, S. Ono, and D. Chiba
  • Organizer: Magnetics and Optics Research International Symposium 2015 (MORIS)
  • Place of Presentation: Toyohashi University of Technology - Universiti Sains Malaysia Technology Collaboration Centre in Penang(Malaysia Penang)
  • Year and Date: 2015-12-01
  • Int'l Joint Research / Invited
• [Presentation] Dependence of Curie temperature on the thickness of Pt layer in Co/Pt system (2015)
  • Author(s): T. Koyama, A. Obinata, Y. Hibino, A. Hirohata, B. Kuerbanjiang, V. Lazarov, and D. Chiba
  • Organizer: 20th International Conference on Magnetism(ICM)
  • Place of Presentation: Palau de Congressos de Catalunya(Spain Barcelona)
  • Year and Date: 2015-07-06
  • Int'l Joint Research
• [Book] 磁性材料・部品の最新開発事例と応用技術 (2018)
  • Author(s): 小山知弘
  • Total Pages: 6
  • Publisher: 技術情報協会
  • ISBN: 9784861047053
• [Remarks] 磁石の中を高速に伝播する”磁気の壁”の運動を電圧で制御することに成功
  • URL: https://www.t.u-tokyo.ac.jp/foe/press/setnws_201812251037471597902553.html