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Exchange coupling and polarization relaxation in self-assembled quantum dots

✍ Scribed by R. Ferreira

Publisher: Elsevier Science
Year: 2002
Tongue: English
Weight: 70 KB
Volume: 13
Category: Article
ISSN: 1386-9477
DOI: 10.1016/s1386-9477(01)00523-9

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✦ Synopsis

We consider the spin-coupling for one electron-hole pair bound in single self-assembled quantum dots. The long-range exchange coupling leads to a vanishing spin splitting of the ground interband transition in cylindrical dots. We evaluate the spin-splitting for di erent electron-hole levels of non-cylindrical structures. Both the dot shape anisotropy and an in-plane perturbing ÿeld are considered. The role of a uctuating environment on the polarization of the bound dot luminescence is also discussed.

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