2009 Fiscal Year Final Research Report
A research on the amplification function in spin-systems
| Project/Area Number |
19206002
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied materials science/Crystal 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, 准教授 (30397682)
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| Project Period (FY) |
2007 – 2009
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| Keywords | スピン / 増幅 / スピントロニクス |
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| 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.
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[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
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