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

Author

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  • P. Liu
  • S.-J. Xiong

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

Suggested Citation

  • P. Liu & S.-J. Xiong, 2006. "Spin-Hall transport in a two-dimensional electron system with magnetic impurities," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 51(4), pages 513-516, June.
  • Handle: RePEc:spr:eurphb:v:51:y:2006:i:4:p:513-516
    DOI: 10.1140/epjb/e2006-00239-1
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