Controllable switching of vortex chirality in magnetic nanodisks by a field pulse

Details Controllable switching of vortex chirality in magnetic nanodisks by a field pulse Controllable switching of vortex chirality in magnetic nanodisks by a field pulse

2007-10-23

arxiv.org/abs/0710.4288v1

Appl. Phys. Lett. 92, 012503 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

REVTeX, 4 pages, 3 figures

Scientific paper

10.1063/1.2829795

We propose a way of fast switching the chirality in a magnetic nanodisk by applying a field pulse. To break the symmetry with respect to clockwise or counterclockwise chirality a mask is added by which an inhomogeneous field influences the vortex state of a nanodisk. Using numerical spin--lattice simulations we demonstrate that chirality can be controllably switched by a field pulse, whose intensity is above some critical value. A mathematical definition for the chirality of an arbitrary shaped particle is proposed.

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