| Project Area | Creation and control of spin current |
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| Project/Area Number |
19048002
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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 | Tohoku University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
三浦 良雄 東北大学, 電気通信研究所, 助教 (10361198)
阿部 和多加 東北大学, 電気通信研究所, 助教 (00361197)
小田 竜樹 金沢大学, 大学院・自然科学研究科, 准教授 (30272941)
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| Co-Investigator(Renkei-kenkyūsha) |
MIURA Yoshio 東北大学, 電気通信研究所, 助教 (10361198)
ABE Kazutaka 東北大学, 電気通信研究所, 助教 (00361197)
ODA Tatsuki 金沢大学, 理工研究域数物科学系, 教授 (30272941)
KIMURA Akio 広島大学, 大学院・理学研究科, 准教授 (00272534)
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| Project Period (FY) |
2007 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥15,800,000 (Direct Cost: ¥15,800,000)
Fiscal Year 2010: ¥3,500,000 (Direct Cost: ¥3,500,000)
Fiscal Year 2009: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2008: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 2007: ¥3,500,000 (Direct Cost: ¥3,500,000)
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| Keywords | スピントロニクス / スピン流 / 第一原理計算 / ハーフメタル / 垂直磁気材料 / 計算物理 / ホイスラー合金 / 磁気トンネル接合 / 巨大磁気抵抗素子 / 磁気異方性 / 電界制御 / スピンエレクトロニクス / 形状記憶合金 / ヘテロ接合 / スピン注入 / 量子ナノ構造 |
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| Research Abstract |
We carried out theoretical design of efficient spin sources on the basis of first-principles calculations in order to improve the output of magnetoresistive devices with use of highly spin-polarized materials (half metals) or perpendicularly magnetized materials and to improve the efficiency of spin injection into semiconductors. We successfully proposed the hetero-junctions which preserve high spin polarization even at the interfaces between half metals and non-magnetic materials. We elucidated the effects of atomic disorder or thermal fluctuation of spin configurations on spin-dependent transport properties. We also investigated the modulation of magnetic anisotropy by external electric field.
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