Evidence for Mn 2+ fine structure in CdMnSe/ZnSe quantum dots caused by their low dimensionality
P. G. Baranov, N. G. Romanov, D. O. Tolmachev, R. A. Babunts, B. R. Namozov, Yu. G. Kusrayev, I. V. Sedova, S. V. Sorokin, S. V. Ivanov
Ioffe Physical-Technical Institute, 194021 St. Petersburg, Russia
PACS: 75.50.Pp, 75.75.+a, 78.67.Hc
Abstract
The axial fine 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 35 GHz and 2 K.