Magnetoresistance due to edge spin accumulation Auteur(s): Dyakonov M. (Article) Publié: Physical Review Letters, vol. 99 p.126601 (2007) Texte intégral en Openaccess : Ref HAL: in2p3-00152251_v1 PMID 17930533 Ref Arxiv: 0705.2738 DOI: 10.1103/PhysRevLett.99.126601 WoS: 000249668000057 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 109 Citations Résumé: Because of spin-orbit interaction, an electrical current is accompanied by a spin current resulting in spin accumulation near the sample edges. Due again to spin-orbit interaction this causes a small decrease of the sample resistance. An applied magnetic field will destroy the edge spin polarization leading to a positive magnetoresistance. This effect provides means to study spin accumulation by electrical measurements. The origin and the general properties of the phenomenological equations describing coupling between charge and spin currents are also discussed. Commentaires: 4 pages, 3 figures |