| Project/Area Number |
24360266
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Physical properties of metals
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| Research Institution | Japan Atomic Energy Agency |
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Principal Investigator |
SAKAI Seiji 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, グループリーダー (10354929)
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| Co-Investigator(Kenkyū-buntansha) |
ENTANI Shiro 独立行政法人日本原子力研究開発機構, 原子力科学研究部門・先端基礎研究センター, 副主任研究員 (40549664)
松本 吉弘 独立行政法人日本原子力研究開発機構, 原子力科学研究部門 先端基礎研究センター, 研究員 (80455287)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥11,700,000 (Direct Cost: ¥9,000,000、Indirect Cost: ¥2,700,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2013: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2012: ¥7,800,000 (Direct Cost: ¥6,000,000、Indirect Cost: ¥1,800,000)
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| Keywords | フラーレン / ナノ炭素 / スピントロニクス / グラフェン / 分子スピントロニクス / 界面 / X線吸収 / X線磁気円二色性 / スピン注入 / 磁性金属 / トンネル磁気抵抗効果 / スピン偏極 / スピンフィルター / XMCD / グラニュラー薄膜 |
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| Outline of Final Research Achievements |
Nanocarbons including graphene and fullerenes attract considerable attention as promising candidate materials for future spintronics. In this project, we investigated spintronic properties of fullerene(C60)-transition metal hybrid structures for realizing highly-efficient spin-injection electrodes for nanocarbons.
Our magnetotransport study of the granular-structured hybrid thin films composed of C60 and iron nanocrystals clarified that the spin polarization of the conduction electrons in the hybrid film is remarkably enhanced due to the spin-filetering effect of the C60/Fe interface. Furthermore, according to the depth-resolved XMCD spectroscopy and theoretical calculations, it was demonstrated that at the C60/Fe interface the electronic states of C60 is significantly modified and a visible spin polarization is induced into C60 by the interfacial interactions between C60 and Fe.
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