2011 Fiscal Year Final Research Report
Path-integral Monte Carlo study of dynamic response in mesoscopic devices
| Project/Area Number |
21740220
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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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 |
KATO Takeo 東京大学, 物性研究所, 准教授 (80332956)
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| Project Period (FY) |
2009 – 2011
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| Keywords | 物性理論 / メゾスコピック系 / 量子ドット / 量子コンピュータ / 量子細線 |
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| Research Abstract |
Dynamic transport properties in hybrid systems with one-dimensional electrons made by edge states of quantum Hall effect and a quantum dot have been studied theoretically. It has been shown that strong electron-electron interaction causes quantum phase transition and that conventional theory cannot be applied to the resultant state as electron coherence is completely suppressed there. Decoherence effect of electron-electron interaction on single electron injection has also been evaluated. Current correlations in Kondo dots and Onsager's relations extended to non-equilibrium states have also been studied.
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