Donor impurity states in elliptical quantum rings subjected to a magnetic field

Abstract: Within the effective-mass approximation we calculate the energies of a donor impurity in an elliptical quantum ring subjected to a magnetic field. The energies are found to exhibit Aharonov–Bohm oscillations depending on the magnetic field and the eccentricity. As the eccentricity increases, the energies decrease and the period increases. [Copyright &y& Elsevier]