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Spin-polarized currents in exchange spring systems

By Matteo Franchin, Giuliano Bordignon, Thomas Fischbacher, Guido Meier, Jürgen Zimmermann, Peter de Groot and Hans Fangohr

Abstract

We present a computational study of the magnetization dynamics of a trilayer exchange spring system in the form of a cylindrical nanopillar in the presence of an electric current. A three-dimensional micromagnetic model is used, where the interaction between the current and the local magnetization is taken into account following a recent model by Zhang and Li [Phys. Rev. Lett. 93, 127204 (2004)] We obtain a stationary rotation of the magnetization of the system around its axis, accompanied by a compression of the artificial domain wall in the direction of the electron flow

Topics: QC
Year: 2008
OAI identifier: oai:eprints.soton.ac.uk:143945
Provided by: e-Prints Soton

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