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    Nonlinear Spin-Polarized Transport through a Ferromagnetic Domain Wall

    Vignale, Giovanni, 1957-
    Flatte, M. E.
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    [PDF] NonlinearSpinPolarizedTransport.pdf (184.4Kb)
    Date
    2002
    Format
    Article
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    Abstract
    A domain wall separating two oppositely magnetized regions in a ferromagnetic semiconductor exhibits, under appropriate conditions, strongly nonlinear I-V characteristics similar to those of a p-n diode. We study these characteristics as functions of wall width and temperature. As the width increases or the temperature decreases, direct tunneling between the majority spin bands reduces the effectiveness of the diode. This has important implications for the zero-field quenched resistance of magnetic semiconductors and for the design of a recently proposed spin transistor.
    URI
    http://hdl.handle.net/10355/7879
    Citation
    Phys. Rev. Lett. 89, 098302 (2002)
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