Fine structure of exciton excited levels in a quantum dot with a magnetic ion

Details Fine structure of exciton excited levels in a quantum dot with a magnetic ion Fine structure of exciton excited levels in a quantum dot with a magnetic ion

2006-11-25

arxiv.org/abs/cond-mat/0611647v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 figures

Scientific paper

10.1103/PhysRevB.75.205313

The fine structure of excited excitonic states in a quantum dot with an embedded magnetic ion is studied theoretically and experimentally. The developed theory takes into account the Coulomb interaction between charged carriers, the anisotropic long-range electron-hole exchange interaction in the zero-dimensional exciton, and the exchange interaction of the electron and the hole with the $d$-electrons of a Mn ion inserted inside the dot. Depending on the relation between the quantum dot anisotropy and the exciton-Mn coupling the photoluminescence excitation spectrum has a qualitatively different behavior. It provides a deep insight into the spin structure of the excited excitonic states.

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