Journal
COMMUNICATIONS IN THEORETICAL PHYSICS
Volume 56, Issue 2, Pages 377-381Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0253-6102/56/2/31
Keywords
non-parabolic conduction band; hydrostatic pressure; quantum dots; hydrogenic impurity; diamagnetic susceptibility
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Simultaneous effects of conduction band non-parabolicity and hydrostatic pressure on the binding energies of 1S, 2S, and 2P states along with diamagnetic susceptibility of an on-center hydrogenic impurity confined in typical GaAs/AlxGa1-x spherical quantum dots are theoretically investigated using the matrix diagonalization method. In this regard, the effect of band non-parabolicity has been performed using the Luttinger Kohn effective mass equation. The binding energies and the diamagnetic susceptibility of the hydrogenic impurity are computed as a function of the dot radius and different values of the pressure in the presence of conduction band non-parabolicity effect. The results we arrived at are as follows: the incorporation of the band edge non-parabolicity increases the binding energies and decreases the absolute value of the diamagnetic susceptibility for a given pressure and radius; the binding energies increase and the magnitude of the diamagnetic susceptibility reduces with increasing pressure.
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