Berlin 2008 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 39: Transport: Nanoelectronics II - Spintronics and Magnetotransport

TT 39.8: Vortrag

Freitag, 29. Februar 2008, 12:30–12:45, EB 202

Transport through Inhomogeneous Magnetization Textures - Domain-Wall Resistance — •Christian Wickles and Wolfgang Belzig — Universität Konstanz, Fachbereich Physik, 78457 Konstanz, Germany

We microscopically derive a transport equation for the conduction electrons in ferromagnetic materials with inhomogeneous magnetisation profiles featuring spin-flip scattering at magnetic impurities. In the diffusive limit, we calculate the conductance through a domain-wall and find that the domain-wall resistance can be positive or negative. In the limit of long walls we find analytical expressions which differ from previous works, which used less general models or different theoretical frameworks.