Spin-Forster transfer in optically excited quantum dots

Details Spin-Forster transfer in optically excited quantum dots Spin-Forster transfer in optically excited quantum dots

2005-03-29

arxiv.org/abs/cond-mat/0503688v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

22 pages, 10 figures, Phys. Rev. B, in press

Scientific paper

10.1103/PhysRevB.71.155323

The mechanisms of energy and spin transfer in quantum dot pairs coupled via the Coulomb interaction are studied. Exciton transfer can be resonant or phonon-assisted. In both cases, the transfer rates strongly depend on the resonance conditions. The spin selection rules in the transfer process come from the exchange and spin-orbit interactions. The character of energy dissipation in spin transfer is different than that in the traditional spin currents. The spin-dependent photon cross-correlation functions reflect the exciton transfer process. In addition, a mathematical method to calculate F\"orster transfer in crystalline nanostructures beyond the dipole-dipole approximation is described.

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