Spin-Hall transport in a two-dimensional electron system with magnetic impurities

P. Liu () and S.-J. Xiong

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 51, issue 4, 513-516

Abstract: The spin Hall transport properties in a two-dimensional electron system with both Rashba spin-orbit coupling (SOC) and magnetic impurities are investigated. Electrons are scattered by impurities through an exchange interaction that leads to spin flip-flop processes and so changes the spin Hall effect induced by the SOC. The spin Hall conductance is calculated in a 4-terminal system using the Landauer-Buttiker formula and Green function approach. In comparison with the simulation results on nonmagnetic impurities doping systems, our results reveal that the spin Hall conductance is still nonzero in a system with a large density of magnetic impurities and a finite intensity of the exchange interaction between the electrons and impurities, and its sign may be altered when the doping density and interaction strength are large enough. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 72.10.-d Theory of electronic transport; scattering mechanisms, 72.15.Gd Galvanomagnetic and other magnetotransport effects, 85.75.-d Magnetoelectronics; spintronics: devices exploiting spin polarized transport or integrated magnetic fields , (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00239-1

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