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Title: Spin Hall effect in a 2DEG in the presence of magnetic couplings
Authors: Gorini, Cosimo
Schwab, Peter
Dzierzawa, Michael
Raimondi, Roberto
Milletarì, Mirco
Keywords: spintronica
spin Hall effect
magnetic impurities
magnetic field
spin orbita
Issue Date: Feb-2009
Publisher: IOP Publishing
Pages: 1-4
Abstract: It is now well established that the peculiar linear-in-momentum dependence of the Rashba (and of the Dresselhaus) spin-orbit coupling leads to the vanishing of the spin Hall conductivity in the bulk of a two-dimensional electron gas (2DEG). In this paper we discuss how generic magnetic couplings change this behaviour providing then a potential handle on the spin Hall effect. In particular we examine the influence of magnetic impurities and an in-plane magnetic field. We find that in both cases there is a finite spin Hall effect and we provide explicit expressions for the spin Hall conductivity. The results can be obtained by means of the quasiclassical Green function approach, that we have recently extended to spin-orbit coupled electron systems.
Appears in Collections:X_Dipartimento di Fisica 'Edoardo Amaldi'
ATC - Atti di Convegno

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