2010 Fiscal Year Final Research Report
Research on Spin current driven high frequency and heat devices
| Project Area | Creation and control of spin current |
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| Project/Area Number |
19048026
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| Research Category |
Grant-in-Aid for Scientific Research on Priority Areas
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | Osaka University |
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Principal Investigator |
SUZUKI Yoshishige Osaka University, 大学院・基礎工学研究科, 教授 (50344437)
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| Co-Investigator(Kenkyū-buntansha) |
SHIRAISHI Masashi 大阪大学, 大学院・基礎工学研究科, 教授 (30397682)
NOZAKI Takayuki 大阪大学, 大学院・基礎工学研究科, 助教 (60452405)
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| Project Period (FY) |
2007 – 2010
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| Keywords | スピン流 / 磁性体ナノ構造 / 高周波特性 / 熱輸送 / スピントロニクス |
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| Research Abstract |
By using a magnetic interlayer coupling a magnetic resonance mode with over 20 GHz was realized and successfully excited by a direct injection of electric current.
By developing a theory based on a Boltzmann's treatment of electron, we showed that a temperature gradient may cause a spin-current and non-equilibrium spin-wave distribution may result in a large Seebeck coefficient. In addition, we showed an equation to evaluate energy dissipation in a diffusive spin-current.
We showed that the tunneling magneto-resistive device may show a superior diode sensitivity compared with the semiconductor diodes.
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Research Products
(68 results)
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[Journal Article] Large Diode Sensitivity of CoFeB/MgO/CoFeB Magnetic Tunnel Junctions2010
Author(s)
S.Ishibashi, T.Seki, T.Nozaki, H.Kubota, S.Yakata, A.Fukushima, S.Yuasa, H.Maehara, K.Tsunekaw, D.D.Djayaprawir, Y.Suzuki
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Journal Title
Appl.Phys.Exp. 3
Pages: 073001-1-073001-3
Peer Reviewed
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[Journal Article] Spin-transfer-torque-induced rf oscillations in CoFeB/MgO/CoFeB magnetic tunnel junctions under a perpendicular magnetic field2010
Author(s)
T.Wada, T.Yamane, T.Seki, T.Nozaki, Y.Suzuki, H.Kubota, A.Fukushima, S.Yuasa, H.Maehara, Y.Nagamine, K.Tsunekawa, D.D.Djayaprawira, N.Watanabe
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Journal Title
Phys.Rev.B 81,1
Pages: 104410-1-104410-7
Peer Reviewed
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[Journal Article] 強磁性トンネル接合素子におけるスピントルク発振の磁場方位依存性2009
Author(s)
和田朋之, 山根健量, 関剛斎, 野崎隆行, 鈴木義茂, 久保田均, 福島章雄, 湯浅新治, 前原大樹, 永峰佳紀, 恒川孝二, D.D.Dyayaprawira, 渡辺直樹
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Journal Title
JMSJ日本磁気学会 第33巻,4号
Pages: 379-383
Peer Reviewed
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[Journal Article] Inelastic tunneling spectraof MgO barrier magnetic tunneling junctions showing large magnon contribution.2009
Author(s)
Do Bang, T.Nozaki, D.D.Djayaprawira, Y.Suzuki, A.Fukushima, H.Kunota, T.Nagahama, S.Yuasa, H.Meahara, K.Tsunekawa, Y.Nagamine, N.Watanabe, H.Itoh
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Journal Title
J.Appl.Phys. 105
Pages: 07C924-1-07C924-3
Peer Reviewed
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