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Combined effects of hydrostatic pressure and temperature on the binding energy of an exciton in a quantum ring.
1 : Laboratoire Physique du solide
* : Auteur correspondant
B.P. 1796 Fès-Atlas, 30003 -
Maroc
The effects of a hydrostatic pressure and temperature have been studied theoretically on an exciton confined in GaAs/Ga1-xAlxAs quantum ring (QR). The ground state binding energy is calculated as a function of the radius, height of the ring and the barrier height using a variational approach within the effective mass approximation. In the calculations, we considered a finite confinement potential barriers model, and the effects due to the difference effective masses of electron and hole in GaAs and Ga1-xAlxAs are considered. We demonstrated that the binding energy of the exciton is an increasing function of the hydrostatic pressure and strongly influenced by the variation of the radius and height of QR.
