C P Moca and D C Marinescu 2007 New J. Phys. 9 343 doi:10.1088/1367-2630/9/9/343
Spin-Hall conductivity of a spin-polarized two-dimensional electron gas with Rashba spin–orbit interaction and magnetic impurities
Focus on Spintronics in Reduced DimensionsC P Moca1,2 and D C Marinescu3
Show affiliationsPart of Focus on Spintronics in Reduced Dimensions
The Kubo formula is used to calculate the spin-Hall conductivity σsH in a spin-polarized two-dimensional electron system with Rashba-type spin–orbit interaction. As in the case of the unpolarized electron system, σsH is entirely determined by states at the Fermi level, a property that persists in the presence of magnetic impurities. In the clean limit, the spin-Hall conductivity decreases monotonically with the Zeeman splitting, a result of the ordering effect on the electron spins produced by the magnetic field. In the presence of magnetic impurities, the spin-dependent scattering determines a finite renormalization of the static part of the fully dressed vertex correction of the velocity operator that leads to an enhancement of σsH, an opposite behaviour to that registered in the presence of spin-independent disorder. The variation of σsH with the strength of the Rashba coupling and the Zeeman splitting is studied.
- PACS
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72.20.My Galvanomagnetic and other magnetotransport effects
71.70.Ej Spin-orbit coupling, Zeeman and Stark splitting, Jahn-Teller effect
- Subjects
- Dates
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Issue 9 (September 2007)
Received 19 April 2007
Published 28 September 2007
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Spin-Hall conductivity of a spin-polarized two-dimensional electron gas with Rashba spin–orbit interaction and magnetic impurities
C P Moca and D C Marinescu 2007 New J. Phys. 9 343
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