| Project/Area Number |
26600012
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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 |
Nanostructural physics
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| Research Institution | Osaka Institute of Technology (2015)
Japan Advanced Institute of Science and Technology (2014) |
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Principal Investigator |
Yamada Syoji 大阪工業大学, 教育センター, 教授 (00262593)
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| Co-Investigator(Kenkyū-buntansha) |
Murakami Shuichi 東京工業大学, 理工学研究科, 教授 (30282685)
Iwase Hiuma 北陸先端科学技術大学院大学, ナノマテリアルテクノロジーセンター, 助教 (10709132)
Uchitomi Naotaka 長岡科学技術大学, 工学研究科, 教授 (20313562)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | スピンホール効果 / ２次元電子系 / ２層系 / スピントランジスタ / 2次元電子系 / 2層系 / 2次元電子ガス2層系 / 逆スピンホール効果 |
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| Outline of Final Research Achievements |
In this study, starting from the theoretical work proposing the resonant spin-Hall effect in two-dimensional bilayer system with spin-orbit interaction (SOI), we have tried to observe such a phenomenon. The material is a narrow-gap semiconductor hetero-junction which has a strong Rashba type SOI and fabricate multi-terminal Hall bar which has three regions, spin-injection, -diffusion and -detection, with a top gate in each. We have measured inverse spin-Hall (ISHE) voltage in a detection region in a non-local measurement configuration due to the spin diffusion flow created by spin-Hall effect in a injection region. As a result, we confirmed resonant peak in a sum of voltages from top- and side-probes, indicating the existence of the ISHE signal, although the final conclusion is not yet obtained. We also studied theoretical aspects of this problem.
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