Influence of electron-electron interaction on the cyclotron resonance spectrum of magnetic quantum dots containing few electrons

The configuration interaction method is used to obtain the magneto-optical absorption spectrum of a few-electron (N-e = 1,2,...,5) quantum dot containing a single magnetic ion. We find that the IR spectrum (the position, the number, and the oscillator strength of the cyclotron resonance peaks) depends on the strength of the Coulomb interaction, the number of electrons, and the position of the magnetic ion. We find that the Kohn theorem is no longer valid as a consequence of the electron-spin-magnetic-ion-spin-exchange interaction.