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arXiv · 1010.5446

Off-centered immobile magnetic vortex under influence of spin-transfer torque

Volodymyr P. Kravchuk·Denis D. Sheka·Franz G. Mertens·Yuri Gaididei
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Abstract

Equilibrium magnetization distribution of the vortex state magnetic nanoparticle is affected by the influence of the spin-transfer torque: an off-center out--of--plane vortex appears in the case of the disk shape particle and pure planar vortex in the case of asymmetric ring shape particle. The spin current causes extra out-of-plane magnetization structures identical to well known dip structures for the moving vortex. The shape of the dip structure depends on the current strength and value of the off-center displacement and it does not depend on the vortex polarity. The critical current depends on the nanodot thickness.

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Volodymyr P. Kravchuk, Denis D. Sheka, Franz G. Mertens, Yuri Gaididei. 2010-10-26. Off-centered immobile magnetic vortex under influence of spin-transfer torque. https://doi.org/10.1088/0022-3727/44/28/285001

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