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Determination of the Pt spin diffusion length by spin-pumping and spin Hall effect

Abstract:

The spin diffusion length of Pt at room temperature and at 8 K is experimentally determined via spin pumping and spin Hall effect in permalloy/Pt bilayers. Voltages generated during excitation of ferromagnetic resonance from the inverse spin Hall effect and anisotropic magnetoresistance effect were investigated with a broadband approach. Varying the Pt layer thickness gives rise to an evolution of the voltage line shape due to the superposition of the above two effects. By studying the ratio of the two voltage components with the Pt layer thickness, the spin diffusion length of Pt can be directly extracted. We obtain a spin diffusion length of ∼1.2 nm at room temperature and ∼1.6 nm at 8 K. © 2013 AIP Publishing LLC.

Año de publicación:

2013

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso restringido

    Áreas de conocimiento:

    • Física
    • Ciencia de materiales

    Áreas temáticas:

    • Electricidad y electrónica
    • Magnetismo

    Contribuidores:

    Hoffmann A.Hoffmann A.
    Bader S.D.Bader S.D.
    Vincent VlaminckVincent Vlaminck
    Divan R.Divan R.
    Pearson J.E.Pearson J.E.
    Zhang W.Zhang W.