Thermal Spin-Wave Scattering in Hot-Electron Magnetotransport Across a Spin Valve

R. Jansen, P.S Anil Kumar, O.M.J. van 't Erve, R. Vlutters, P. de Haan, J.C. Lodder

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    The role of thermal scattering in spin-dependent transport of hot electrons at 0.9 eV is studied using a spin-valve transistor with a soft Ni80Fe20/Au/Co base. Spin-dependent scattering makes the collected electron current depend sensitively on the magnetic state of the base. The magnetocurrent reaches 560% at 100 K, decays with increasing temperature, and a huge effect of 350% still remains at room temperature. The results demonstrate that thermal spin waves produce quasielastic spin-flip scattering of hot electrons, resulting in mixing of the two spin channels.
    Original languageEnglish
    Pages (from-to)3277-3280
    Number of pages4
    JournalPhysical review letters
    Issue number15
    Publication statusPublished - 2000


    • SMI-NE: From 2006 in EWI-NE


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