Magnetic field induced donor binding energy of a GaN/AlGaN quantum dot

Abstract The donor binding energy of a parabolic quantum dot is investigated in the presence of a intense magnetic field. We also consider that the donor is placed at the center of the parabolic quantum dot. Using the effective-mass approximation within a variational scheme, binding energy of donor are obtained as a function of the dot size with and without the magnetic field strength. The result shows that binding energy decreases as the radius of the quantum dot increases or the magnetic field decreases. The magnetic field is appreciable especially for large QD while for small QD the geometrical confinement is predominant.