Journal of Physics: Conference Series 1506, 012010 (2020)

ISSN: 1742-6596

Biexciton in 2D parabolic quantum dot in magnetic fields

Nguyen Hong Quang and Tran Anh Dung

We theoretically study biexciton, exciton and charged excitons confined in 2D parabolic quantum dots in a magnetic field by using an unrestricted Hatree-Fork method. The energy and binding energy of exciton and biexciton are presented as a function of magnetic field which show their increase with increasing magnetic field, although small. Our results for the case of strong confinement in InAs/GaAs self-assembled quantum dots show that, while the binding energies of both exciton and negatively charged exciton are positive, the binding energies of the biexciton and positively charged exciton are negative indicating that biexcitons in this system are antibinding.

DOI: 10.1088/1742-6596/1506/1/012010

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