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Spin Hall effect of alloys: Extrinsic and intrinsic contribution

2010/10/26 by Stephan Lowitzer, S. Lowitzer, Lowitzer, Stephan +12
Physics and Astronomy · #FOS: Physical sciences #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.1010.5520

arxiv created 2010/10/26 · openalex publication_date 2010/10/26 · arxiv updated 2010/10/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

A fully relativistic description of the spin-orbit induced spin Hall effect is presented that is based on Kubo's linear response formalism. Using an appropriate operator for the spin current density a Kubo-Středa-like equation for the spin Hall conductivity (SHC) is obtained. An implementation using the Korringa-Kohn-Rostoker (KKR) band structure method in combination with the Coherent Potential Approximation (CPA) allow detailed investigations on various alloy systems. A decomposition of the SHC into intrinsic and extrinsic contributions is suggested. Accompanying calculations for the skew-scattering contribution of the SHC using the Boltzmann equation demonstrate the equivalence to the Kubo formalism in the dilute alloy regime and support the suggested decomposition scheme.

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