Anisotropic carrier and exciton confinement in T-shaped quantum wires revealed by magneto-photoluminescence

Wolfgang Werner Langbein, Hannes Gislason, Jørn Märcher Hvam, J Zeman

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    The realization of one-dimensional (1D) semiconductor nanostructures with large confinement energies is of importance for device applications. Different techniques such as growth on tilted substrates (Serpentine superlattices) or prepatterned substrates (V-groove quantum wires) and the cleaved-edge overgrowth of T-shaped structures have been demonstrated. For the T-shaped structures, the confinement energy has been recently increased to above 2kBT at room temperature by optimizing structure parameters. A decreased exciton diameter in the [110] direction in the wire compared with the [110] well was revealed by magneto-photoluminescence. We determine here the extension of the T-shaped quantum wire (T-QWR) state in both confining directions [110] and [001] to verify its 1D character, as shown for crescent-shaped wires
    Original languageEnglish
    Title of host publicationSummaries of papers presented at the International Quantum Electronics Conference
    Publication date1998
    ISBN (Print)1557525420
    Publication statusPublished - 1998
    Event1998 International Quantum Electronics Conference - San Francisco, CA, United States
    Duration: 3 May 19988 May 1998


    Conference1998 International Quantum Electronics Conference
    Country/TerritoryUnited States
    CitySan Francisco, CA

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