Thermalization dynamics of high-density electron-hole systems involving Auger recombination processes
| Project/Area Number |
21740227
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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 | Kyoto University |
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Principal Investigator |
NAKA Nobuko 京都大学, 大学院・理学研究科, 准教授 (10292830)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2009: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 光物性 / オージェ再結合 |
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| Research Abstract |
In high-density electron-hole systems, many-body interactions such as an Auger recombination process which accompanies non-radiative recombination play an essential role in determining the carrier dynamics. We experimentally pursued thermalization dynamics of excitons and free carriers by using spectroscopic methods covering a wide spectral range. We have succeeded in establishing the nanosecond time-resolved cyclotron resonance method which probes free carriers produced by optically excited excitons in an oxide semiconductor, and find out correlation between the free and trapped excions at the vacancy state. This made it possible to quantitatively discuss formation dynamics of free carriers via two-body collisions of excitons.
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Report
(4 results)
Research Products
(37 results)
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[Presentation] Exciton dynamics in potential traps and the possibility of Bose-Einstein condensation2011
Author(s)
R. Schwartz, D. Semkat, S. Sonkowiak, H. Stolz, N. Naka, J. Brandt, D. Froehlich, M. Bayer, Th. Koch, H. Fehske
Organizer
Inter-national Conference on Correlation Effects in Radiation Fields
Place of Presentation
Rostock, Germany
Year and Date
2011-09-13
Related Report
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[Presentation] Exciton dynamics in potential traps and the possibility of Bose-Einstein condensation2011
Author(s)
R.Schwartz, D.Semkat, S.Sonkowiak, H.Stolz, N.Naka, J.Brandt, D.Froehlich, M.Bayer, Th.Koch, H.Fehske
Organizer
International Conference on Correlation Effects in Radiation Fields
Place of Presentation
Rostock, Germany
Year and Date
2011-09-13
Related Report
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