A research on the amplification function in spin-systems

• Project/Area Number: 19206002
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Applied materials science/Crystal engineering
• Research Institution: Osaka University
• Principal Investigator: SUZUKI Yoshishige Osaka University, 大学院・基礎工学研究科, 教授 (50344437)
• Co-Investigator(Kenkyū-buntansha): SHIRAISHI Masashi 大阪大学, 大学院・基礎工学研究科, 准教授 (30397682)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥48,620,000 (Direct Cost: ¥37,400,000、Indirect Cost: ¥11,220,000); Fiscal Year 2009: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000); Fiscal Year 2008: ¥14,950,000 (Direct Cost: ¥11,500,000、Indirect Cost: ¥3,450,000); Fiscal Year 2007: ¥20,540,000 (Direct Cost: ¥15,800,000、Indirect Cost: ¥4,740,000)
• Keywords: スピン / 増幅 / スピントロニクス

Research Abstract

1) Amplification effect based on the spin-transfer torque
Physical mechanism to have the negative resistance appeared in magnetic tunnel junctions were clarified. Experimental and theoretical investigations revealed that the control of the precession angle and the thermal fluctuation of magnetization by an injected current are responsible for the amplification function at low and high temperatures, respectively.
2) Amplification effect based on the voltage induced anisotropy change
A large change in magnetization direction caused by an application of a voltage was found in Au/Fe ultrathin film/MgO/Ployimide/ITO junctions employing about 3ML thick Fe layer. The result indicates that an amplification function can be obtained from a control of a magnetization using an application of a voltage.

Research Products

• [Journal Article] oltage-induced perpendicular magnetic anisotropy change in magnetic tunnel junctions (2010)
  • Author(s): T. Nozaki, Y. Shiota, M. Shiraishi, T. Shinjo, Y. Suzuki
  • Journal Title: Appl. Phys. Lett. Vol.96 Pages: 22506-22506
  • Peer Reviewed
• [Journal Article] Voltage-induced perpendicular magnetic anisotropy change in magnetic tunnel junctions (2010)
  • Author(s): Takayuki. Nozaki
  • Journal Title: Appl.Phys.Lett. Vol.96 Pages: 22506-22506
  • Peer Reviewed
• [Journal Article] rf amplification in a three-terminal magnetic tunnel junction with a magnetic vortex structure (2009)
  • Author(s): T. Nozaki, M. Shiraishi, Y. Suzuki
  • Journal Title: Appl. Phys. Lett. Vol.95 Pages: 22513-22513
  • Peer Reviewed
• [Journal Article] Voltage-Assisted Magnetization Switching in Ultrathin Fe80Co20 Alloy Layers (2009)
  • Author(s): Y. Shiota, M. Shiraishi, Y. Suzuki
  • Journal Title: Appl. Phys. Exp Vol.2 Pages: 63001-63001
  • NAID: 210000014375
  • Peer Reviewed
• [Journal Article] Current-Field Driven "Spin Transistor" (2009)
  • Author(s): K. Konishi, M. Shiraishi, Y. Suzuki
  • Journal Title: ppl. Phys. Exp. Vol.2 Pages: 63004-63004
  • NAID: 10025086707
  • Peer Reviewed
• [Journal Article] Spin-Torque Diode Effect and Its Application (2009)
  • Author(s): Y. Suzuki, H. Kubota
  • Journal Title: J. Phys. Soc. Jpn. Vol.77,No.3 Pages: 31002-31002
  • NAID: 110006633447
  • Peer Reviewed
• [Journal Article] Voltage control of in-plane magnetic anisotropy in ultrathin Fe/n-GaAs(001) Schottky junctions (2009)
  • Author(s): K. Ohta, M. Shiraishi, Y. Suzuki
  • Journal Title: Appl. Phys. Lett Vol.94 Pages: 32501-32501
  • Peer Reviewed
• [Journal Article] Voltage-Assisted Magnetization Switching in Ultrathin Fe80Co2O Alloy Layers (2009)
  • Author(s): Yoichi. Shiota
  • Journal Title: Appl.Phys.Exp. Vol.2 Pages: 63001-63001
  • Peer Reviewed
• [Journal Article] Current-Field Driven "Spin Transistor (2009)
  • Author(s): Katsunori Konishi
  • Journal Title: Appl.Phys.Exp. Vol.2 Pages: 63004-63004
  • Peer Reviewed
• [Journal Article] rf amplification in a three-terminal magnetic tunnel junction with a magnetic vortex structure (2009)
  • Author(s): Takayuki. Nozaki
  • Journal Title: Appl.Phys.Lett. Vol.95 Pages: 22513-22513
  • Peer Reviewed
• [Journal Article] Voltage control of in-plane magnetic anisotropy in ultrathin Fe/n-GaAs〓 001Schottky junctions (2009)
  • Author(s): Kenta Ohta
  • Journal Title: Appl. Phys. Lett 94 Pages: 32501-32501
  • Peer Reviewed
• [Journal Article] Large voltage-induced magnetic anisotropy change in a few atomic layers of iron (2008)
  • Author(s): T. Maruyama, T. Nozaki, Y. Suzuki
  • Journal Title: Nature Nanotechnology Vol.4 Pages: 158-161
  • Peer Reviewed
• [Journal Article] Spin dependent tunneling spectroscopy in single crystalline bcc-Co/MgO/bcc-Co(001) junctions (2008)
  • Author(s): S. Nishioka, R. Matsumoto, Y. Suzuki
  • Journal Title: Appl. Phys. Lett 93 Pages: 12511-12511
  • Peer Reviewed
• [Journal Article] Single-Shot Measurements of Spin-Transfer Switching in CoFeB / MgO / CoFeB (2008)
  • Author(s): H. Tomita, M. Shiraishi, Y. Suzuki
  • Journal Title: Appl. Phys. Express Vol.1,6 Pages: 61303-61303
  • Peer Reviewed
• [Journal Article] Single-Shot Measurements of Spin-Transfer Switching in CoFeB/MgO/CoFeB (2008)
  • Author(s): Hiroyuki Tomita
  • Journal Title: Appl. Phys. Express. Vol. 1, 6 Pages: 61303-61303
  • Peer Reviewed
• [Journal Article] Spin dependent tunneling spectroscopy in single crystalline bcc-Co/MgO/bcc-Co(001) junctions (2008)
  • Author(s): Shingo Nishioka
  • Journal Title: Appl. Phys. Lett 93 Pages: 12511-12511
  • Peer Reviewed
• [Journal Article] Large voltage-induced magnetic anisotropy change in a few atomic layers of iron (2008)
  • Author(s): Takuto Maruyama
  • Journal Title: nature nanotechnology
  • Peer Reviewed
• [Journal Article] Dependence on annealing temperatures of tunneling spectra in high-resistance CoFeB/MgO/CoFeB magnetic tunnel junctions (2007)
  • Author(s): R. Matsumoto, M. Shiraishi, Y. Suzuki
  • Journal Title: Solid State Commun Vol.90
  • Peer Reviewed
• [Journal Article] スピン注入素子の高周波特性-発振・ダイオード効果とマグネティックノイズ-, まぐね (2007)
  • Author(s): 鈴木義茂
  • Journal Title: 日本磁気学会誌 vol.2,No.6 Pages: 282-290
  • Peer Reviewed
• [Journal Article] スピン注入素子の高周波特性-発振・ダイオード効果とマグネティックノイズ- (2007)
  • Author(s): 鈴木 義茂
  • Journal Title: まぐね Vol.2, No.6 Pages: 282-290
  • NAID: 10019927938
  • Peer Reviewed
• [Presentation] Au/Fe/Au/MgO構造における垂直磁気異方性とその電圧制御 (2010)
  • Author(s): 村上真一, 白石誠司, 鈴木義茂
  • Organizer: 本物理学会2010春
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] Au/Fe/Au/MgO構造における垂直磁気異方性とその電圧制御 (2010)
  • Author(s): 村上真一
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学
  • Year and Date: 2010-03-21
• [Presentation] 超薄膜FeCo/MgO/Fe接合における磁気異方性の電界制御 (2010)
  • Author(s): Y. Shiota, T. Nozaki, T. Shinjo, M. Shiraishi, Y. Suzuki
  • Organizer: 応用物理学会2010春
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-19
• [Presentation] 超薄膜FeCo/MgO/Fe接合における磁気異方性の電界制御 (2010)
  • Author(s): 塩田陽一
  • Organizer: 2010年春季 第57回応用物理学会
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-19
• [Presentation] 電界誘起磁化反転 (2010)
  • Author(s): 鈴木義茂, 野崎隆行, 塩田陽一, 丸山拓人, 白石誠司, 新庄輝也
  • Organizer: 応用物理学会2010春
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-18
• [Presentation] 電界誘起磁化反転 (2010)
  • Author(s): 鈴木義茂
  • Organizer: 2010年春季 第57回応用物理学会
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-18
• [Presentation] 強磁性トンネル接合素子におけるスピントルクダイオード電圧の磁場角度依存性 (2010)
  • Author(s): 石橋翔太, 鈴木義茂, 渡辺直樹
  • Organizer: 応用物理学会2010春
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-17
• [Presentation] 強磁性トンネル接合素子におけるスピントルクダイオード電圧の磁場角度依存性 (2010)
  • Author(s): 石橋翔太
  • Organizer: 2010年春季 第57回応用物理学会
  • Place of Presentation: 東海大学
  • Year and Date: 2010-03-17
• [Presentation] Voltage induced magnetic anisotropy change in ultrathin Fe80Co20 / MgO junctions (2010)
  • Author(s): Y. Shiota, M. Shiraishi, Y. Suzuki
  • Organizer: 11th Intermag
  • Place of Presentation: Washington D.C.
  • Year and Date: 2010-01-21
• [Presentation] Microwave-assisted magnetization switching in a perpendicularly magnetized film (2010)
  • Author(s): T. Yoshioka, M. Shiraishi, Y. Suzuki, Y. Uehara
  • Organizer: 11th Intermag
  • Place of Presentation: Washington D. C
  • Year and Date: 2010-01-19
• [Presentation] Microwave-assisted magnetization switching in a perpendicula rly magnetized film. (2010)
  • Author(s): 吉岡孝
  • Organizer: 11th Intermag
  • Place of Presentation: Washington D. C., USA
  • Year and Date: 2010-01-19
• [Presentation] Voltage induced magnetic anisotropy change in ultrathin Fe8OCo2O/MgO junctions. (2010)
  • Author(s): 塩田陽一
  • Organizer: 11th Intermag
  • Place of Presentation: Washington D. C., USA
  • Year and Date: 2010-01-12
• [Presentation] Au/FeCo合金/MgO接合における電圧誘起磁気異方性制御 (2009)
  • Author(s): 塩田陽一、白石誠司、鈴木義茂
  • Organizer: 日本金属学会
  • Place of Presentation: 京都大学
  • Year and Date: 2009-09-16
• [Presentation] Au/Fe/MgO/Feトンネル接合における電圧誘起磁気異方性変化 (2009)
  • Author(s): 野崎隆行, 白石誠司, 鈴木義茂
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-14
• [Presentation] Au/Fe//MgO/Feトンネル接合における電圧誘起磁気異方性変化 (2009)
  • Author(s): 野崎隆行
  • Organizer: 第33回日本磁気学会学術講演会
  • Place of Presentation: 長崎大学
  • Year and Date: 2009-09-14
• [Presentation] 超薄膜Fe80Co20 / MgO接合における電圧誘起磁化反転 (2009)
  • Author(s): 塩田陽一, 白石誠司, 鈴木義茂
  • Organizer: 応用物理学会2009秋
  • Place of Presentation: 富山大学
  • Year and Date: 2009-09-10
• [Presentation] 超薄膜Fe80Co20/MgO接合における電圧誘起磁化反転 (2009)
  • Author(s): 塩田陽一
  • Organizer: 応用物理学会 2009秋季大会
  • Place of Presentation: 富山大学
  • Year and Date: 2009-09-10
• [Presentation] 低温におけるトンネル磁気抵抗素子のスピントルクダイオード測定 (2009)
  • Author(s): S. Ishibashi, Y. Suzuki, N. Watanabe
  • Organizer: 応用物理学会2009秋
  • Place of Presentation: 富山大学
  • Year and Date: 2009-09-08
• [Presentation] 低温におけるトンネル磁気抵抗素子のスピントルクダイオード測定 (2009)
  • Author(s): 石橋翔太
  • Organizer: 応用物理学会 2009秋季大会
  • Place of Presentation: 富山大学
  • Year and Date: 2009-09-08
• [Presentation] Current-field driven spin transistor (2009)
  • Author(s): K. Konishi, M. Shiraishi, Y. Suzuki
  • Organizer: ICMFS2009
  • Place of Presentation: Berlin
  • Year and Date: 2009-07-22
• [Presentation] Current-field driven spin transistor (2009)
  • Author(s): 小西克典
  • Organizer: ICMFS2009
  • Place of Presentation: Berlin, Germany
  • Year and Date: 2009-07-22
• [Presentation] Voltage induced magnetic anisotropy change in a Fe(001) alloy layers with perpendicular magnetization (2009)
  • Author(s): Y. Shiota, M. Shiraishi, Y. Suzuki
  • Organizer: INTERMAG
  • Place of Presentation: Sacramento CA
  • Year and Date: 2009-05-05
• [Presentation] 電圧印加による超薄膜Fe層の磁気異方性制御 (2008)
  • Author(s): 野崎隆行, 白石誠司, 鈴木義茂
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-22
• [Presentation] CoFeB/MgO/CoFeB接合におけるスピン注入磁化反転の外部磁場方位依存性 (2008)
  • Author(s): 冨田博之, 鈴木義茂
  • Organizer: 応用物理学会2008秋
  • Place of Presentation: 中部大学
  • Year and Date: 2008-09-04
• [Presentation] CoFeB/MgO/CoFeB接合におけるスピン注入磁化反転の実時間測定 (2008)
  • Author(s): 冨田博之, 鈴木義茂
  • Organizer: 第32回日本磁気学会学術講演会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2008-09-01
• [Presentation] Real Time Measurements of Spin-Transfer Switching in CoFeB/MgO/CoFeB (2008)
  • Author(s): 冨田博之, 鈴木義茂
  • Organizer: INTERMAG2008
  • Place of Presentation: マドリッド国際会議場
  • Year and Date: 2008-05-05
• [Presentation] Voltage control of the in-plane magnetic hysteresis in Fe/Au/Fe(001) and Fe (001) (2008)
  • Author(s): 鈴木義茂
  • Organizer: INTERMAG2008
  • Place of Presentation: マドリッド国際会議場
  • Year and Date: 2008-05-05
• [Presentation] Role of the spin-toruqe (2008)
  • Author(s): 鈴木義茂
  • Organizer: 2008Annual Meeting
  • Place of Presentation: 韓国物理学会
  • Year and Date: 2008-04-17
• [Presentation] Detection of Current-Driven Magnetic Domain Wall Motions using Anistropic Magnetoresistance Effect (2007)
  • Author(s): H. Maekawa, M. Shiraishi, Y. Suzuki
  • Organizer: International Symposium on Advanced Magnetic Materials and Applications
  • Place of Presentation: The Shilla Jeju hotel
  • Year and Date: 2007-05-28
• [Book] 「放射光x線磁気分光と散乱(橋爪弘雄・岩住俊明編)」(附録:磁性多層膜における磁気的交換結合の振動とスピン分極) (2007)
  • Author(s): 鈴木義茂
  • Publisher: 株式会社アイピーシー
• [Book] 放射光X線磁気分光と散乱(橋爪弘雄・岩住俊明編)」(附録:磁性多層膜における磁気的交換結合の振動とスピン分極) (2007)
  • Author(s): 鈴木 義茂
  • Total Pages: 250
  • Publisher: 株式会社アイピーシー
• [Patent(Industrial Property Rights)] 名称:磁化制御方法、情報記憶方法、情報記憶素子及び磁気機能素子 (2009)
  • Inventor(s): 鈴木義茂・野崎隆行・丸山拓人・塩田陽一
  • Industrial Property Rights Holder: 鈴木義茂・野崎隆行・丸山拓人・塩田陽一
  • Filing Date: 2009-02-27
• [Patent(Industrial Property Rights)] 磁化制御方法、情報記憶方法、情報記憶素子及び磁気機能素子 (2009)
  • Inventor(s): 鈴木義茂, 野崎隆行, 丸山拓人, 塩田陽一
  • Industrial Property Rights Holder: 鈴木義茂, 野崎隆行, 丸山拓人, 塩田陽一
  • Filing Date: 2009-02-27
  • Overseas
• [Patent(Industrial Property Rights)] 磁化制御方法、情報記憶方法、情報記憶素子及び磁気機能素子 (2008)
  • Inventor(s): 鈴木義茂・野崎隆行・丸山拓人
  • Industrial Property Rights Holder: 鈴木義茂・野崎隆行・丸山拓人
  • Filing Date: 2008-05-02
• [Patent(Industrial Property Rights)] 磁化制御方法、情報記憶方法、情報記憶素子及び磁気機能素子 (2008)
  • Inventor(s): 鈴木義茂, 野崎隆行, 丸山拓人
  • Industrial Property Rights Holder: 鈴木義茂, 野崎隆行, 丸山拓人
  • Industrial Property Number: 2008-120614
  • Filing Date: 2008-05-02