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Optical observation of single-carrier charging in type-II quantum ring ensembles

Young, Robert and Smakman, E. P. and Sanchez, A. M. and Hodgson, P. and Koenraad, P. M. and Hayne, M. (2012) Optical observation of single-carrier charging in type-II quantum ring ensembles. Applied Physics Letters, 100 (8). -. ISSN 0003-6951

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    Abstract

    A high-purity GaSb/GaAs quantum ring system is introduced that provides both strong hole-confinement in the GaSb ring and electron confinement in its GaAs core. The latter is responsible for a reduced inhomogeous linewidth measured in photoluminescence, in comparison to the previous measurements made on nanostructures with differing morphology in this material system. This allows the resolution of multiple peaks in the photoluminescence due to discrete charging with holes, revealing the mechanism responsible for the excitation-power-induced blueshift. (C) 2012 American Institute of Physics. [doi:10.1063/1.3688037]

    Item Type: Article
    Journal or Publication Title: Applied Physics Letters
    Additional Information: © 2012 American Institute of Physics
    Uncontrolled Keywords: HOLE SPIN ; DOTS ; SEMICONDUCTOR ; STATES
    Subjects: Q Science > QC Physics
    Departments: Faculty of Science and Technology > Physics
    ID Code: 53372
    Deposited By: ep_importer_pure
    Deposited On: 28 Mar 2012 01:01
    Refereed?: Yes
    Published?: Published
    Last Modified: 05 Sep 2014 18:17
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/53372

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