Edge-induced spin polarization in two-dimensional electron gas

Abstract

We characterize the role of the spin-orbit coupling between electrons and the confining potential of the edge in nonequilibrium 2D homogeneous electronic gas. We derive a simple analytical result for the magnitude of the current induced spin polarization at the edge and prove that it is independent of the details of the confinement edge potential and the electronic density within realistic values of the parameters of the considered models. While the amplitude of the spin accumulation is comparable to the experimental values of extrinsic spin Hall effect in similar samples, the spatial extent of edge induced effect is restricted to the distances of the order of Fermi wavelength ($\sim$ 10nm).

7 pages, 5 figures

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Cited by in corpus (7)

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• Current-induced spin polarization at the surface of metallic films: a theorem and an ab initio calculation
• Giant mesoscopic spin Hall effect on surface of topological insulator
• Spin susceptibility in interacting two-dimensional semiconductors and bilayer systems at first order: Kohn anomalies and spin density wave ordering
• Current-induced spin polarization at metallic surfaces from first-principles
• Helical edge states induced by lateral spin-orbit coupling
• Magnetoelectric torque and edge currents in spin-orbit coupled graphene nanoribbons