Abstract
The anomalous Hall effect (AHE) in the Mn4N/Au bilayers with various Au thicknesses has been investigated. The new scaling including multiple competing mechanisms is employed to analyze the contributions to the AHE. The obvious variations in the skew scattering coefficient α and the two scattering coefficients (β0 + β1 − γ) and (γ − 2β1) in the bilayers reveal that the skew scattering term and the side-jump contribution are dramatically modified, implying that the mechanisms in the bilayers are different from those in the single Mn4N. On further analysis, we find that the coefficient β0 involving the intrinsic mechanism and side-jump contribution also varies, which confirms the experimental results. It is proposed that the modification of the AHE is induced by the spin-orbital coupling from the heavy metal, providing a practical way to tune the AHE.
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