Size dependence of biexciton binding energy in single InAs/GaAs quantum dots
| Autor: | Dou Xiu-Ming, Jia Rui, Niu Zhi-Chuan, Sun Bao-Quan, Huang She-Song, Ni Hai-Qiao, Yang Fuhua |
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| Rok vydání: | 2009 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Molecular model Condensed Matter::Other Atomic force microscopy Exciton Binding energy General Physics and Astronomy Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science Quantum dot Atomic physics Size dependence Biexciton |
| Zdroj: | Chinese Physics B. 18:2258-2263 |
| ISSN: | 1674-1056 |
| Popis: | This paper studies the size dependence of biexciton binding energy in single quantum dots (QDs) by using atomic force microscopy and micro-photoluminescence measurements. It finds that the biexciton binding energies in the QDs show "binding" and "antibinding" properties which correspond to the large and small sizes of QDs, respectively. The experimental results can be well interpreted by the biexciton potential curve, calculated from the exciton molecular model and the Heitler-London method. |
| Databáze: | OpenAIRE |
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