Interface, Volume, and Thermal Attenuation of Hot-Electron Spins in Ni80Fe20 and Co

R. Vlutters, O.M.J. van 't Erve, S.D. Kim, R. Jansen, J.C. Lodder

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    The relative importance of interface, volume, and thermal scattering in spin-dependent hot-electron transmission of magnetic trilayers is quantified. While interfaces produce significant attenuation (factor 2.2 per interface), the spin asymmetry is dominated by volume scattering. Extracted thermal attenuation lengths (130 Å at 300 K for Ni.......Fe...) show that thermal spin-wave scattering is stronger than hith-erto assumed. This suggests that spontaneous spin-wave emission, rather than the details of the spin-dependent band structure, may cause the strong filtering of minority hot-electron spins.
    Original languageUndefined
    Pages (from-to)027202-1-027202-4
    Number of pages4
    JournalPhysical review letters
    Issue number2
    Publication statusPublished - 2002


    • EWI-5660
    • IR-44242
    • METIS-208693
    • SMI-NE: From 2006 in EWI-NE

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