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    Effect of quantum confinement on exciton-phonon interactions

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    Zhao Effect of quantum confinement abstract.pdf (254.1Kb)
    Issue Date
    2002-08
    Author
    Zhao, Hui
    Wachter, Sven
    Kalt, Heinz
    Publisher
    American Physical Society
    Type
    Other
    Version
    http://arxiv.org/abs/cond-mat/0207142v2
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    Abstract
    We investigate the homogeneous linewidth of localized type-I excitons in type-II GaAs/AlAs superlattices. These localizing centers represent the intermediate case between quasi-two-dimensional (Q2D) and quasi-zero-dimensional localizations. The temperature dependence of the homogeneous linewidth is obtained with high precision from micro-photoluminescence spectra. We confirm the reduced interaction of the excitons with their environment with decreasing dimensionality except for the coupling to LO-phonons. The low-temperature limit for the linewidth of these localized excitons is five times smaller than that of Q2D excitons. The coefficient of exciton-acoustic-phonon interaction is 5 ~ 6 times smaller than that of Q2D excitons. An enhancement of the average exciton-LO-phonon interaction by localization is found in our sample. But this interaction is very sensitive to the detailed structure of the localizing centers.
    Description
    Permissions were not obtained for sharing the full text of this article. Full text is available from the American Physical Society and from arXiv. See links in this record.
    URI
    http://hdl.handle.net/1808/7362
    DOI
    https://doi.org/10.1103/PhysRevB.66.085337
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    Hui Zhao, S. Wachter, and H. Kalt, Effect of quantum confinement on exciton-phonon interactions, Physical Review B 66, 085337 (2002). http://link.aps.org/doi/10.1103/PhysRevB.66.085337

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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