Spin-polarized currents in exchange spring systems

Spin-polarized currents in exchange spring systems

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 i...

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Main Authors: Franchin, Matteo (Author), Bordignon, Giuliano (Author), Fischbacher, Thomas (Author), Meier, Guido (Author), Zimmermann, Jürgen (Author), de Groot, Peter (Author), Fangohr, Hans (Author)
Format: Article
Language:English
Published: 2008-04-01.
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Summary: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.

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