Anomalous Hall effect induced by a pure longitudinal spin injection

作者:Liu, S Y*; Horing, Norman J M; Lei, X L; Monroy, B M
来源:Physica E: Low-Dimensional Systems and Nanostructures , 2008, 40(5): 1083-1084.
DOI:10.1016/j.physe.2007.08.008

摘要

Recently, a nonvanishing anomalous Hall resistivity was observed accompanying a pure spin injection into aluminum through a ferromagnetic contact [Nature 442, (2006) 176]. In this paper, we present a quantitative explanation of this experimental observation considering intrinsic spin-orbit coupling, as well as an extrinsic spin-orbit interaction induced by electron-impurity scattering. In connection with this, we evaluate the band structure and wave function of aluminum by the orthogonalized-plane-wave method and determine the contributions to anomalous Hall resistivity from side-jump and skew scatterings after numerically solving a spatially dependent Boltzmann equation. The obtained Hall resistivity is in good agreement with the experimental data.

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