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Dresden 2011 – scientific programme

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KR: Fachgruppe Kristallographie

KR 5: Poster Multiferroics (Joint Session of MA, DF, DS, KR, TT)

KR 5.15: Poster

Tuesday, March 15, 2011, 10:45–13:00, P2

Imaging of spin-torque induced magnetization dynamics in lateral spin injector configuration — •Matthias Buhl1, Kerstin Bernert1, Sebastian Wintz1, Tom Henschel1, Roland Mattheis2, Jörg Raabe3, Jochen Grebing1, Kay Potzger1, Artur Erbe1, and Jürgen Fassbender11Helmholtz Zentrum Dresden Rossendorf, Bautzner Landstraße 400, 01328 Dresden, Germany — 2Institut für Photonische Technologien e.V., Postfach 100239, 07702 Jena, Germany — 3Swiss Light Source, Paul Scherrer Institut, 5232 Villigen, Switzerland

Electrical transport characteristics of structures consisting of normal metals and ferromagnetic materials depend strongly on the magnetization direction of the ferromagnets. Thus, different spin polarizations can lead to different resistance values of such structures. The absorption of spin polarized electrons in a ferromagnetic material (spin transfer torque) by domain/domain walls leads to magnetization switching or domain wall movement. This can be achieved by driving a current perpendicular to the plane of the ferromagnet (CPP) or in the plane (CIP). In this experiment we investigate the magnetization behavior of ferromagnetic nanopillars located between two lateral spin injectors in the CIP configuration. Using Scanning Transmission X-ray Mircoscopy (STXM) these studies will give more insights in the switching behavior and dynamics. Technological applications can mostly be found in memory structures, where the magnetization can be stored and read out.

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