Evidence for Mn2+ Fine Structure in CdMnSe/ZnSe Quantum Dots Caused by Their Low Dimensionality

The axial line structure with strong positive zero-field splitting for Mn2+ ions in CdMnSe/ZnSe quantum dots caused by their low dimensionality was revealed. Magnetic resonance was measured as a variation of photoluminescence intensity. In spite of isotropic g factor of Mn2+ ions, the anisotropic behavior of the center of gravity of the resonance has been observed because of the high Boltzmann factor at 3 5 GHz and 2 K.