2012 Fiscal Year Final Research Report
Spectroscopic investigations of many-body correlation effects in low dimensional field effect devices
| Project Area | Optical science of dynamically correlated electrons in semiconductors |
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| Project/Area Number |
20104005
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Science and Engineering
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| Research Institution | University of Tsukuba |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YAMAGUCHI Masumi 日本電信電話株式会社, NTT物性科学基礎研究所量子電子物性研究部, 主任研究員 (80393817)
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| Project Period (FY) |
2008 – 2012
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| Keywords | 分光 / 低次元半導体 / 多体量子相関 / 電界効果素子 |
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| Research Abstract |
Electron-hole many-body correlation effects lead to novel functions of low dimensional field effect devices. In this research project, we have clarified many-body correlation effects by spectroscopic investigations, in particular, by separating the disorder effects in low electron density regime. We have observed emissions from fractionally charged quasiexcitons, which are composite particles with non-integral total charge. Moreover, we have developed a novel spectroscopic measurement method utilizing a near-field scanning optical microscope, and have succeeded in investigating dynamic correlations of non-equilibrium carriers.
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