Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 39: Transport: Nanoelectronics II - Spintronics and Magnetotransport

TT 39.3: Vortrag

Freitag, 29. Februar 2008, 11:00–11:15, EB 202

Effect of spin-orbit coupling on transport through ferromagnetic atomic-sized contacts — •Michael Häfner^1,2,3, Janne Viljas^1,2, and Juan Carlos Cuevas^3,1,2 — ¹Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe — ²Institut für Nanotechnologie, FZ Karlsruhe, D-76021 Karlsruhe — ³Departamento de Física Teórica de la Materia Condensada, Universidad Autónoma de Madrid, E-28049 Madrid

Based on a tight-binding model we analyze the effect of spin-orbit coupling on the transport through ferromagnetic atomic-sized contacts. Our calculation shows a strong dependence of the conductance on the direction of magnetization. The results suggest that the anisotropic magnetoresistance found in recent experiments on transport through ferromagnetic atomic-sized contacts [1] stems from the spin-orbit coupling.

[1] K. Bolotin et al., Phys. Rev. Lett. 97, 127202 (2006)