Self-organized quantum disks for a two-state system
| Autor: | Toshiaki Tamamura, Hidehiko Kamada, Hiroaki Ando, E. Kuramochi, Jiro Temmyo |
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| Rok vydání: | 2002 |
| Předmět: |
Nanostructure
Photoluminescence Materials science Condensed matter physics Absorption spectroscopy Mechanical Engineering Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Condensed Matter::Materials Science Mechanics of Materials Qubit Quantum system General Materials Science Metalorganic vapour phase epitaxy Quantum Quantum well |
| Zdroj: | Materials Science and Engineering: B. 88:153-157 |
| ISSN: | 0921-5107 |
| DOI: | 10.1016/s0921-5107(01)00874-1 |
| Popis: | We mainly discuss the self-organization in a strained InGaAs/AlGaAs system on a GaAs(311)B surface. This self-organizing growth mode in metal–organic–vapor phase epitaxy automatically produces very small confined nanostructure of quantum disks during growth interruption under a high growth temperature. The micro-photoluminescence (micro-PL) and PL excitation spectroscopies exhibit very narrow excitonic emission and absorption lines. These results indicate that the self-organized quantum disk is a zero-dimensional nanostructure and discrete excitonic states in the zero-dimensional disk may be applicable to a two-state quantum system. |
| Databáze: | OpenAIRE |
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