Energy renormalization of exciton complexes in GaAs quantum dots
| Autor: | Takaaki Mano, Kazuaki Sakoda, Massimo Gurioli, C. Mastrandrea, Takuma Tsuchiya, Marco Abbarchi, Takashi Kuroda, Anna Vinattieri |
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| Rok vydání: | 2010 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics Condensed matter physics Condensed Matter::Other Quantum Monte Carlo Exciton Quantum point contact Hartree Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Electronic Optical and Magnetic Materials Renormalization Quantum dot Quantum mechanics Principal quantum number Biexciton |
| Zdroj: | Physical Review B. 82 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.82.201301 |
| Popis: | Using GaAs/AlGaAs self-assembled quantum dots we study the few-particle dynamics of fully confined systems, which is associated with purely Coulomb interaction and is not affected by the internal strain field. Systematic evolution in the binding energies of positive and negative trions, as well as biexcitons, with dot size is interpreted in terms of a balance between the Hartree mean-field corrections on single-particle states and the interparticle correlations which lead to a nonseparable dynamics. The experimental behaviors are well reproduced by exact many-body calculations within the framework of the quantum Monte Carlo approach. |
| Databáze: | OpenAIRE |
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