2012 Fiscal Year Final Research Report
Spin pumping into molecular single crystal
Project/Area Number |
23656017
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Applied materials science/Crystal engineering
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Research Institution | Osaka University |
Principal Investigator |
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Project Period (FY) |
2011 – 2012
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Keywords | 分子単結晶 / スピンポンピング / 逆スピンホール効果 / スピン輸送 |
Research Abstract |
The spin pumping method was regarded as a potential method to circumvent the conductivity mismatch problem, which becomes a serious obstacle for spin injection in an electrical method. However, this study revealed that this recognition is not always correct. In order to modulate conductivity of a spin channel, non-degenerated p-type Si was selected as a spin channel, and successful spin pumping and transport of pure spin current at room temperature was realized. This study was published in Physical Review Letters. Next, single-layer graphene, which is nano-carbon single crystal and a zero-gap semiconductor, was used as a spin channel. Here again, successful spin pumping and transport of pure spin current at room temperature was realized, the detail of which was published in Physical Review B as Rapid Communications. Both papers were selected as Editor’s Suggestion, and the contents of these studies were introduced in Japanese papers, such as the Yomiuri Shinbun and the Nikkan Kogyo Shinbun.
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[Remarks] 1. 日刊工業新聞 2013年2月14日「シリコンスピン素子 開発へ一歩」
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[Remarks] 2. 読売新聞 2013年3月25日「スピントロニクス研究熱く」科学面特集記事
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[Remarks] その他マイナビニュース・Yahoo ニュースなどに掲載
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[Remarks] 第2回 RIEC Award(2012 年 11 月)