We present an experimental investigation of the magneto optical properties of neutral exciton, neutral biexciton and charged exciton confined in self-assembled GaAs/Al(0.3)Ga(0.7)As strain free quantum dots grown by droplet epitaxy. We measured the diamagnetic shift. for several quantum dots spanning an interval of 200 meV of the exciton emission energy. The dependence of. 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 quantum well case.
Diamagnetic coefficient of excitonic complexes in GaAs/Al(0.3)Ga(0.7)As quantum dots / M. Abbarchi; T. Mano; T. Kuroda; M. Gurioli; K. Sakoda. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 210:(2010), pp. 121-125. [10.1088/1742-6596/210/1/012012]
Diamagnetic coefficient of excitonic complexes in GaAs/Al(0.3)Ga(0.7)As quantum dots
ABBARCHI, MARCO;GURIOLI, MASSIMO;
2010
Abstract
We present an experimental investigation of the magneto optical properties of neutral exciton, neutral biexciton and charged exciton confined in self-assembled GaAs/Al(0.3)Ga(0.7)As strain free quantum dots grown by droplet epitaxy. We measured the diamagnetic shift. for several quantum dots spanning an interval of 200 meV of the exciton emission energy. The dependence of. 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 quantum well case.
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