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Single exciton spectroscopy of semimagnetic quantum dots

J. Fernández-Rossier
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Abstract

A photo-excited II-VI semiconductor nanocrystal doped with a few Mn spins is considered. The effects of spin-exciton interactions and the resulting multi-spin correlations on the photoluminescence are calculated by numerical diagonalization of the Hamiltonian, including exchange interaction between electrons, holes and Mn spins, as well as spin-orbit interaction. The results provide a unified description of recent experiments of photoluminesnce of dots with one and many Mn atoms as well as optically induced ferromagnetism in semimagnetic nanocrystals.

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J. Fernández-Rossier. 2005-08-09. Single exciton spectroscopy of semimagnetic quantum dots. https://doi.org/10.1103/physrevb.73.045301

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