| Project/Area Number |
15K20878
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
Nanostructural physics
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| Research Institution | Tohoku University |
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Principal Investigator |
Oka Hirofumi 東北大学, 多元物質科学研究所, 研究支援者 (70374600)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | スピン偏極STM / 強磁性ナノ構造 / スピン依存散乱 / 電子定在波 / スピン依存電子散乱 / ナノ構造 / 量子閉じ込め / スピン分解バンド構造 |
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| Outline of Final Research Achievements |
At the interface of ferromagnet and non-magnetic materials, the scattering probability of electrons strongly depends on their spin directions and magnetization directions of the ferromagnet. In this study, using spin-polarized scanning tunneling microscopy, we investigate the spin-dependent scattering phenomenon at electronic level and nano-meter scale.
Co nanostructures on Cu(111) exhibit different electronic states at the center part and the rim area. We find that electrons of electronic states at the center scatter off not at the border of the nanostructure but at the “electronic” border between the center and rim areas, and form electronic standing waves within the center area. We reveal that the reflectivity of center-part electrons at the electronic border changes with the spin configuration of the electrons against the rim.
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