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Cancellation of fine-structure splitting in quantum dots by a magnetic field

Stevenson, R. M. and Young, R. J. and See, P. and Gevaux, D. G. and Cooper, K. and Atkinson, P. and Farrer, I. and Ritchie, D. A. and Shields, A. J. (2006) Cancellation of fine-structure splitting in quantum dots by a magnetic field. Physica E: Low-dimensional Systems and Nanostructures, 32 (1-2). pp. 135-138. ISSN 1386-9477

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Abstract

We demonstrate control of the fine-structure splitting of the exciton emission lines in single InAs quantum dots by the application of an in-plane magnetic field. The composition of the barrier material and the size and symmetry of the quantum dot are found to determine decrease or increase in the linear polarization splitting of the dominant exciton emission lines with increasing magnetic field. This enables the selection of dots for which the splitting can to be tuned to zero, within the resolution of our experiments. General differences in the g-factors and exchange splittings are found for different types of dot. (c) 2006 Elsevier B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Physica E: Low-dimensional Systems and Nanostructures
Subjects: Q Science > QC Physics
Departments: Faculty of Science and Technology > Physics
ID Code: 54926
Deposited By: ep_importer_pure
Deposited On: 07 Jun 2012 12:36
Refereed?: Yes
Published?: Published
Last Modified: 05 Sep 2014 18:01
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/54926

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