The Faculty of Graduate Studies awarded the researcher Salsabeel Saleh Mohmmad Qaroot a Master’s Degree in Physics in response to her thesis entitled “The Magnetization of Donor Impurity in Quantum Dot with Gaussian Confinement Under Magnetic Field”.

The effect of magnetic field on the donor impurity states confined in GaAs with Gaussian confinement, has been studied.

The Hamiltonian, including the spin term ,had been solved by using 1/N expansion method The energy and binding energy of donor ground state of electron had been displayed as a function of magnetic field ,Gaussian confinement potential height (V0) and the radius of quantum dot (R). We have calculated the magnetic quantities of donor impurity in QD such as the magnetization(M) and the magnetic susceptibility (χ).Also, we have shown dependence of (M ) and (χ) on temperature ,magnetic field , confinement potential .In addition ,we have investigated the effect of impurity on the magnetic properties of QD . The comparisons show that our result are in very good agreement with published ones.

The committee consisted of: Prof. Mohammed Al-Saeed as a main supervisor and Chairman, Dr. Marwan Koni as a second supervisor, Dr. MuayadAbu Saa’ as an external examiner and Prof. Issam Rashed as an internal examiner.

At the end of the session, the committee approved the success of the researcher and recommended her a Master’s degree.



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