2012 Fiscal Year Final Research Report
Effective field theory of spin- and charge-controlling quantum nano devices out of equilibrium
| Project/Area Number |
22540324
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | University of Tsukuba |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 物性物理 / 半導体物性 / 量子ドット / スピントロニクス / ナノ材料 / 近藤効果 / ナノチューブ |
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| Research Abstract |
The research aims to construct a simple yet reliable effective theory that can describe quantum transport phenomena in two promising systems for spin-charge controllability: a quantum dot with degenerate levels and interaction, and a spin-orbit quantum dot interferometer. We resolve seemingly contradicting experimental data from the viewpoint of our effective theory, and predict a new spin phenomenon where spin current is generated electronically due to nonequilibrium electronic correlation effect.
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