The Effects of Magnetic and Electric Fields on Donor Impurity States in GaAs Quantum Dot
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Date
2018-06-03
Authors
ياسين, اسماء زهير مدحت
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Publisher
An-Najah National University
Abstract
The effects of magnetic and electric fields on the donor impurity states confined in a GaAs two dimensional (2D) parabolic quantum dot has been studied. The impurity energy and binding energy of the ground state and some low-lying excited states were calculated. The Hamiltonian was solved using 1/N expansion method within the effective mass approximation. The results had been displayed as a function of physical parameters: confinement strength〖 ω〗_0, magnetic field strength ω_c, and electric field strength F.
In addition, we have studied the magnetic properties of the donor impurity in the quantum dot by calculating the magnetization and the magnetic susceptibility. The dependence of the magnetization and the magnetic susceptibility quantities on temperature, confinement strength ω_0, magnetic field ω_c, and electric field strength F were investigated. The comparisons show that our results are in very good agreement with reported works
The effects of magnetic and electric fields on the donor impurity states confined in a GaAs two dimensional (2D) parabolic quantum dot has been studied. The impurity energy and binding energy of the ground state and some low-lying excited states were calculated. The Hamiltonian was solved using 1/N expansion method within the effective mass approximation. The results had been displayed as a function of physical parameters: confinement strength〖 ω〗_0, magnetic field strength ω_c, and electric field strength F.
In addition, we have studied the magnetic properties of the donor impurity in the quantum dot by calculating the magnetization and the magnetic susceptibility. The dependence of the magnetization and the magnetic susceptibility quantities on temperature, confinement strength ω_0, magnetic field ω_c, and electric field strength F were investigated. The comparisons show that our results are in very good agreement with reported works