A magnetic quantum dot in a diluted magnetic semiconductor/semiconductor heterostructure

•A DMS/NMS quantum dot is theoretically studied.•The effective mass approximation is used.•The effects of the giant Zeeman splitting are investigated.•The spin-dependent distribution of spin states is found.

A circular quantum dot consisting of a diluted magnetic semiconductor and a nonmagnetic semiconductor in the presence of a constant magnetic field is theoretically investigated. Electron eigenenergies and eigenstates are calculated using effective mass approximation. We show how the spin up and spin down eigenenergies vary with the effective g-factor. Spin-dependent distribution of electron wavefunctions is found. The approximation of the eigenenergies is also discussed.