| Project/Area Number |
26600068
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied materials
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| Research Institution | Tohoku University |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | スピントロニクス / 強磁性半導体 / 分子線エピタキシ / 同時ドーピング / 磁気異方性 / 電界効果 |
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| Outline of Final Research Achievements |
We grow (Ga,Mn)As codoped with nonmagnetic Li donors by molecular beam epitaxy. We show that the solubility of Mn in GaAs is increased by Li doping above 1%. (Ga,Mn)As with Mn composition of 15% and Li composition of 1% shows the magnitude of magnetization of 140 mT, which is the largest value reported so far, and the result indicate that the most of introduced Mn substitute into cation sites. We observe pronounced in-plane magnetic anisotropy, whose direction depends on temperature.
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