Effect of Spin-Orbit Interactions on the Energy, Magnetic Moment and Susceptibility of an Off-Center Donor Impurity in a Gaussian Quantum Dot

被引：1

作者：

Boda, Aalu ^{[1
]}

机构：

[1] Indian Inst Technol Hyderabad, Dept Phys, Sangareddy 502285, Telangana, India

来源：

3RD INTERNATIONAL CONFERENCE ON CONDENSED MATTER & APPLIED PHYSICS (ICC-2019) | 2020年 / 2220卷

关键词：

Energy; Magnetic moment and susceptibility; Rashba and Dresselhaus spin-orbit interactions; Hydrogenic donor impurity; Gaussian quantum dot; GROUND-STATE ENERGY; FIELD; COMPLEX;

D O I：

10.1063/5.0001170

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Rashba and Dresselhaus spin-orbit interactions and magnetic field effect on an off-center neutrally charged hydrogenic donor impurity D-0 in a three-dimensional (3D) GaAs Gaussian quantum dot is investigated in the framework of effective-mass approximation theory. By performing a unitary transformation the effect of the spin-orbit interactions incorporated and retaining terms up to quadratic in the spin-orbit coupling constants (alpha(R), alpha(D)) The Rayleigh-Ritz variational method is employed for the resulting Hamiltonian with a simple wave function to determine the ground state (GS) energy, GS magnetic moment, and GS magnetic susceptibility of an off-centre hydrogenic donor impurity. The results show that the Rashba spin-orbit interaction reduces, the Dresselhaus spin-orbit interaction and magnetic field enhances the total GS energy of the donor impurity.

引用

页数：4

共 17 条

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