Spin-transfer torque in magnetic multilayer nanopillars

Details Spin-transfer torque in magnetic multilayer nanopillars Spin-transfer torque in magnetic multilayer nanopillars

2006-10-31

arxiv.org/abs/cond-mat/0610878v1

J. Phys.: Conf. Ser. 61, 909 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

To appear in the Journal of Physics: Conference Series (Proceedings of the International Conference on Nanoscience and Technol

Scientific paper

10.1088/1742-6596/61/1/181

We consider a quasi one-dimensional configuration consisting of two small pieces of ferromagnetic material separated by a metallic one and contacted by two metallic leads. A spin-polarized current is injected from one lead. Our goal is to investigate the correlation induced between the magnetizations of the two ferromagnets by spin-transfer torque. This torque results from the interaction between the magnetizations and the spin polarization of the current. We discuss the dynamics of a single ferromagnet, the extension to the case of two ferromagnets, and give some estimates for the parameters based on experiments.

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