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Magnetophotoluminescence of positively-charged excitons in GaAs quantum wells

Hayne, M and Vanhoucke, Tony and Henini, Mohamed and Moshchalkov, Victor V (2002) Magnetophotoluminescence of positively-charged excitons in GaAs quantum wells. Physica E: Low-dimensional Systems and Nanostructures, 12 (1-4). pp. 516-519. ISSN 1386-9477

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Abstract

We have studied the low-temperature photoluminescence of high-mobility two-dimensional hole gases in GaAs quantum wells in magnetic fields up to 50 T. We have observed both spin states of the neutral (X-0) and of the singlet state of the positively charged exciton (X-), allowing us to determine their g-factors and the binding energy of X-. We find that the g-factor of the X is larger than that of X-0 by a factor of 1.6. In very high fields. we expect the low-energy spin-state of X- to be bound only because of the Zeeman interaction. (C) 2002 Elsevier Science B.V. All rights reserved.

Item Type: Article
Journal or Publication Title: Physica E: Low-dimensional Systems and Nanostructures
Uncontrolled Keywords: charged excitons ; photoluminescence ; magnetic fields ; 2-DIMENSIONAL HOLE SYSTEMS ; HIGH MAGNETIC-FIELDS
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 49843
Deposited By: ep_importer_pure
Deposited On: 20 Sep 2011 09:23
Refereed?: Yes
Published?: Published
Last Modified: 26 Jul 2012 19:32
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/49843

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