The magnetic properties of GaAs parabolic quantum dot in the presence of donor impurity, magnetic and electric fields

•The magnetic properties of quantum dot system had been investigated.•Effect of donor impurity on the magnetic quantities had been studied.•Magnetic phase changes in the magnetic susceptibility had been shown. The magnetization and the magnetic susceptibility quantities of a single electron moving i...

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Bibliographic Details
Published in:Chinese journal of physics (Taipei) 2019-08, Vol.60, p.598-611
Main Authors: Yaseen, Asmaa, Shaer, Ayham, Elsaid, Mohammad K.
Format: Article
Language:English
Subjects:
Donor impurity
Electric and Magnetic fields
Magnetic Properties
Quantum dot
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Summary:•The magnetic properties of quantum dot system had been investigated.•Effect of donor impurity on the magnetic quantities had been studied.•Magnetic phase changes in the magnetic susceptibility had been shown. The magnetization and the magnetic susceptibility quantities of a single electron moving in a two-dimensional (2D) parabolic quantum dot are studied under the influence of external uniform electric and magnetic fields, in the presence of a donor impurity. The Hamiltonian was solved using shifted 1/N expansion method within the effective mass approximation. The results have been displayed as a function of physical parameters: confinement strength ω0, magnetic field strength ωc, temperature T and electric field strength F.
ISSN:0577-9073
DOI:10.1016/j.cjph.2019.05.031