Effect of geometry on the excitonic diamagnetic shift of nano-rings

Title:	Effect of geometry on the excitonic diamagnetic shift of nano-rings
Authors:	Thu, L. M. Chiu, W. T. Lin, Ta-Chun Voskoboynikov, O. 電子工程學系及電子研究所 Department of Electronics Engineering and Institute of Electronics
Keywords:	nano-rings;exciton;diamagnetic shift
Issue Date:	2011
Abstract:	We simulate magneto-excitons confined in asymmetrically wobbled three-dimensional InAs/GaAs nano-rings. The wobbling asymmetry reproduces realistic experimental geometry of the rings and generates an asymmetry in the side valleys of the three dimensional confinement potential. Using our mapping method and the exact diagonization approach we calculated the excitonic diamagnetic shift and found that even a small wobbling asymmetry can drastically change the diamagnetic shift coefficient. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
URI:	http://hdl.handle.net/11536/15423 http://dx.doi.org/10.1002/pssc.201000449
ISSN:	1862-6351
DOI:	10.1002/pssc.201000449
Journal:	PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 2
Volume:	8
Issue:	2
Appears in Collections:	Conferences Paper

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