2010 Fiscal Year Final Research Report
Control of nuclear spin system and its phase via quantum Hall electron systems
| Project/Area Number |
19204031
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KOMIYAMA Susumu The University of Tokyo, 大学院・総合文化研究科, 教授 (00153677)
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| Research Collaborator |
NAKAJIMA Takashi 東京大学, 大学院・総合文化研究科, 助教 (60534344)
CHEN Jeng-Chung 台湾 国立清華大学, 物理学部, 准教授
TOIDA Hiraku 東京大学, 大学院・総合文化研究科・広域化学専攻・相関基礎科学系, 博士課程
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| Project Period (FY) |
2007 – 2010
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| Keywords | 量子ホール電子系 / 核スピン / 端状態 / 位相干渉性 / 超微細相互作用 |
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| Research Abstract |
Electron-spin eigenstates in quantum Hall edge channels as well as the dynamics of nuclear spin polarization in quantum Hall systems have been clarified by using hyperfine interaction between edge state electrons and nuclear spins. Specific features of electron coherence effects in the systems of quantum point contacts and quantum dots have been clarified. Occurrence of negative differential conductivity in quantum Hall electron systems as well as the existence of thermal bistability in the current-induced breakdown of the quantum Hall states have been experimentally revealed.
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Research Products
(10 results)
