Exciton dephasing in quantum dots: coupling to LO phonons via excited states

Muljarov, Egor A. ORCID: https://orcid.org/0000-0002-2878-4148 and Zimmermann, R. 2008. Exciton dephasing in quantum dots: coupling to LO phonons via excited states. physica status solidi (b) 245 (6) , pp. 1106-1109. 10.1002/pssb.200777613

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Abstract

We have found a novel mechanism of spectral broadening and dephasing in quantum dots (QDs) due to the coupling to longitudinal-optical (LO) phonons. In theory, this mechanism comes into play only if the complete manifold of exciton levels (including those in the wetting-layer continuum) is taken into account. We demonstrate this nontrivial dephasing in different types of QDs, using the exactly solvable quadratic coupling model, here generalized to an arbitrary number of excitonic states. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Uncontrolled Keywords:	03.65.Yz; 71.35.−y; 71.38.−k; 78.67.Hc
Publisher:	Wiley
ISSN:	0370-1972
Last Modified:	20 Oct 2022 08:13
URI:	https://orca.cardiff.ac.uk/id/eprint/27623

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