Shape effects on the diamagnetic susceptibility in Inhomogeneous Quantum Dots

Abstract

We have studied the magnetic field effects on the diamagnetic susceptibility and binding energy of a hydrogenic impurity in a Inhomogeneous Quantum Dots by taking into account various geometries of these systems like spherical, cylindrical and cubic inhomogeneous Quantum Dots. The calculation was performed with the use of a variational method in the effective mass approximation. We describe the effect of the quantum confinement by an infinite deep potential. In order to make a comparison of the geometry, the results obtained for these tree structures show that the diamagnetic susceptibility and the binding energy is proportional with the magnetic field and strongly depend on the position of the donor. There is more pronounced for the large spherical layer.

Diamagnetic Susceptibility of a Hemi-Cylindrical Quantum Dot in the Presence of an Off-Center Donor Atom

“…Thus, the diamagnetic susceptibility could be tuned by changing the geometry of QD and considering the impurity which allows improving the optical and electronic properties. The influence of various geometries of inhomogeneous core/shell QD (spherical, cylindrical and cubic) on 𝜒𝜒 dia under magnetic field effect have been investigated [11]. Reuben [12] has also studied the diamagnetic susceptibility of 1S and 2S states of a confined donor impurity in core/shell spherical QD in the finite potential model.…”