| Project/Area Number |
16K13705
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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 |
Optical engineering, Photon science
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| Research Institution | Institute of Physical and Chemical Research |
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Principal Investigator |
OGAWA NAOKI 国立研究開発法人理化学研究所, 創発物性科学研究センター, ユニットリーダー (30436539)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | スピン偏極光電流 / 光物性 / 光磁気効果 |
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| Outline of Final Research Achievements |
We aimed at detecting the transverse spin moment of optical near-field, by detecting the spin-polarized photocurrent in the adjacent materials having large spin-split electronic states. We used SiO2 prisms to prepare the optical near-field with varying spin states, and employed cleaved crystals of BiTeBr, single crystalline films of (Bi,Sb)2Te3, and single crystals of CdSe as detectors with spin-split band structures. It is found that a flat exposed surface with a large spin-splitting is crucial to realize this experiment. The (Bi,Sb)2Te3 films may have potentials after an appropriate cryostat modification, to finely control the distance between the film and prism surface.
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