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EnglishWe report a detailed experimental investigation of the magneto optical properties of different excitonic complexes (neutral exciton, neutral biexciton and charged exciton) confined in self-assembled GaAs/AlGaAs strain free quantum dots grown by droplet epitaxy, where all piezoelectric effects are lacking. We measured the Land`e g factor and the diamagnetic coefficient for several quantum dots spanning an interval of ∼ 200 meV of the emission energy. The dependence of g factor and on quantum dot size and shape is discussed together with a comparison with Stranski–Krastanov and fluctuation induced GaAs quantum dots, as well as with excitons confined in quantum wells.
Magneto-optical properties of excitonic complexes in GaAs self-assembled quantum dots / M. Abbarchi; T. Kuroda; T. Mano; K. Sakoda; M. Gurioli. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1550-235X. - STAMPA. - 81(2010), pp. 035334-1-035334-7. [10.1103/PhysRevB.81.035334]
| Titolo: | Magneto-optical properties of excitonic complexes in GaAs self-assembled quantum dots | |
| Autori di Ateneo: | ||
| Autori: | M. Abbarchi; T. Kuroda; T. Mano; K. Sakoda; GURIOLI, MASSIMO | |
| Data di pubblicazione: | 2010 | |
| Rivista: | ||
| Volume: | 81 | |
| Pagina iniziale: | 035334-1 | |
| Pagina finale: | 035334-7 | |
| Abstract: | We report a detailed experimental investigation of the magneto optical properties of different excitonic complexes (neutral exciton, neutral biexciton and charged exciton) confined in self-assembled GaAs/AlGaAs strain free quantum dots grown by droplet epitaxy, where all piezoelectric effects are lacking. We measured the Land`e g factor and the diamagnetic coefficient for several quantum dots spanning an interval of ∼ 200 meV of the emission energy. The dependence of g factor and on quantum dot size and shape is discussed together with a comparison with Stranski–Krastanov and fluctuation induced GaAs quantum dots, as well as with excitons confined in quantum wells. | |
| Handle: | http://hdl.handle.net/2158/396309 | |
| Appare nelle tipologie: | 1a - Articolo su rivista |
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http://hdl.handle.net/2158/396309
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