Extracting current-induced spins: spin boundary conditions at narrow Hall contacts

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dc.creatorAdagideli, I.
dc.creatorScheid, M.
dc.creatorWimmer, M.
dc.creatorBauer, G. E. W.
dc.creatorRichter, K.
dc.date2007-08-02
dc.date.accessioned2026-07-07T08:45:12Z
dc.date.available2026-07-07T08:45:12Z
dc.descriptionWe consider the possibility to extract spins that are generated by an electric current in a two-dimensional electron gas with Rashba-Dresselhaus spin-orbit interaction (R2DEG) in the Hall geometry. To this end, we discuss boundary conditions for the spin accumulations between a spin-orbit coupled region and contact without spin-orbit coupling, i.e. a normal two-dimensional electron gas (2DEG). We demonstrate that in contrast to contacts that extend along the whole sample, a spin accumulation can diffuse into the normal region through finite contacts and detected by e.g. ferromagnets. For an impedance-matched narrow contact the spin accumulation in the 2DEG is equal to the current induced spin accumulation in the bulk of R2DEG up to a geometry-dependent numerical factor.
dc.description18 pages, 7 figures, submitted to NJP focus issue on Spintronics
dc.identifierhttps://arxiv.org/abs/0708.0244
dc.identifierhttp://arxiv.org/abs/0708.0244
dc.identifierNew J. Phys. 9, 382 (2007)
dc.identifierdoi:10.1088/1367-2630/9/10/382
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/142896
dc.subjectMesoscale and Nanoscale Physics
dc.titleExtracting current-induced spins: spin boundary conditions at narrow Hall contacts
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