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  • Spin transport and spin current detection in semiconductors

    Author(s)
    Miah, M Idrish
    Gray, E MacA
    Griffith University Author(s)
    Gray, Evan M.
    Miah, Mohammad I.
    Year published
    2008
    Metadata
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    Abstract
    We consider a semiconductor device similar to the subject of recent experiments on the spin-dependent Hall effect and analyse electric field effects in spin transport. A drift-diffusion equation for spin density is derived, and drift and diffusion contributions to the spin current are examined, which importantly suggests a possible way for the enhancement of spin current by using a semiconductor degenerate regime. By referring to the experimental detection technique, an expression for the transverse Hall field arising from the spin current is derived, whose exponential dependence on distance at electric fields near Esimilar, ...
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    We consider a semiconductor device similar to the subject of recent experiments on the spin-dependent Hall effect and analyse electric field effects in spin transport. A drift-diffusion equation for spin density is derived, and drift and diffusion contributions to the spin current are examined, which importantly suggests a possible way for the enhancement of spin current by using a semiconductor degenerate regime. By referring to the experimental detection technique, an expression for the transverse Hall field arising from the spin current is derived, whose exponential dependence on distance at electric fields near Esimilar, equalsEco can also be used as a convenient and useful tool to determine the spin diffusion length of a semiconductor. The results are discussed and are compared with published experimental data.
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    Journal Title
    Solid State Sciences
    Volume
    10
    Issue
    2
    DOI
    https://doi.org/10.1016/j.solidstatesciences.2007.07.038
    Subject
    Condensed Matter Physics
    Inorganic Chemistry
    Macromolecular and Materials Chemistry
    Publication URI
    http://hdl.handle.net/10072/20257
    Collection
    • Journal articles

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