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Localized excitons in quantum wells show spin relaxation without coherence loss

Zimmermann, R., Langbein, Wolfgang Werner, Runge, E. and Hvam, J. M. 2001. Localized excitons in quantum wells show spin relaxation without coherence loss. Physica E: Low-dimensional Systems and Nanostructures 10 (1-3) , pp. 40-44. 10.1016/S1386-9477(01)00050-9

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Abstract

The coherence in the secondary emission from quantum well excitons is studied using the speckle method. Analysing the different polarization channels allows to conclude that (i) no coherence loss occurs in the cross-polarized emission, favouring spin beating instead of spin dephasing, and that (ii) the underlying interface disorder has a preferential orientation. The experimental results are successfully compared with a microscopic model of exciton disorder eigenstates including exchange splitting.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Additional Information: Proceedings of the First International Conference on the Physics and Applications of Spin-Related Phenomena in Semiconductors
Publisher: Elsevier
ISSN: 1386-9477
Last Modified: 04 Jun 2017 08:00
URI: http://orca.cf.ac.uk/id/eprint/71528

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