Single exciton spectroscopy of semimagnetic quantum dots

Details Single exciton spectroscopy of semimagnetic quantum dots Single exciton spectroscopy of semimagnetic quantum dots

2005-08-09

arxiv.org/abs/cond-mat/0508235v1

Phys. Rev. B 73, 045301 (2006)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.73.045301

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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