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    Temperature dependence of persistent spin currents in a spin-orbit-coupled electron gas: A density-matrix approach

    Bencheikh, K.
    Vignale, Giovanni, 1957-
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    [PDF] TemperatureDependencePersistentSpinCurrents.pdf (174.2Kb)
    Date
    2008
    Format
    Article
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    Abstract
    We present a simple analytical method, based on the canonical density matrix, for the calculation of the equilibrium spin current as a function of temperature in a two- dimensional electron gas with both Rashba and Dresselhaus spin-orbit coupling terms. We find that the persistent spin current is extremely robust against thermal disorder: its variation with temperature is exponentially small (∝e−TF∕T) at temperatures much smaller than the Fermi temperature TF and changes to a power law TF∕T for T⪢TF.
    URI
    http://hdl.handle.net/10355/7687
    Citation
    Phys. Rev. B 77, 155315 (2008) [10 pages]
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    • Physics and Astronomy publications (MU)

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