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    Anisotropic plasmons in a two-dimensional electron gas with spin-orbit interaction

    Badalyan, S. M.
    Matos-Abiague, A.
    Vignale, Giovanni, 1957-
    Fabian, J.
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    [PDF] AnisotropicPlasmonsTwoDimensionalElectron.pdf (250.6Kb)
    Date
    2009
    Format
    Article
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    Abstract
    Spin-orbit coupling-induced anisotropies of plasmon dynamics are investigated in two- dimensional semiconductor structures. The interplay of the linear Bychkov-Rashba and Dresselhaus spin-orbit interactions drastically affects the plasmon spectrum: the dynamical structure factor exhibits variations over several decades, prohibiting plasmon propagation in specific directions. While this plasmon filtering makes the presence of spin-orbit coupling in plasmon dynamics observable, it also offers a control tool for plasmonic devices. Remarkably, if the strengths of the two interactions are equal, not only the anisotropy but all the traces of the linear spin-orbit coupling in the collective response disappear.
    URI
    http://hdl.handle.net/10355/7663
    Citation
    Phys. Rev. B 79, 205305 (2009) [5 pages]
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    • Physics and Astronomy publications (MU)

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