Anisotropic spin-orbit scattering of hot-electron spins injected into ferromagnetic thin films

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

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    Abstract

    Anisotropic spin-orbit scattering of hot-electron spins in ferromagnets is examined by injecting a hot-electron current into the thin ferromagnetic base of a transistor and measuring the current attenuation as a function of the magnetization orientation. The transmission anisotropy is described by a simple model, from which we extract an effective spin-orbit scattering length of 420 nm for hot-electron spins in Ni80Fe20, independent of temperature. The corresponding scattering time (<0.3 ps) is surprisingly short, suggesting efficient spin-lattice relaxation of hot electrons. The results also unambiguously demonstrate the attenuation of a hot-electron current by an elastic scattering process.
    Original languageUndefined
    Pages (from-to)166601-1
    Number of pages4
    JournalPhysical review letters
    Volume87
    Issue number16
    DOIs
    Publication statusPublished - 2001

    Keywords

    • IR-61280
    • SMI-NE: From 2006 in EWI-NE
    • EWI-5461

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