Anomalous Hall effect induced by a pure longitudinal spin injection

✍ Scribed by S.Y. Liu; Norman J.M. Horing; X.L. Lei; B.M. Monroy

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 170 KB
• Volume: 40
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2007.08.008

✦ Synopsis

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.