Switching phenomena in magnetic vortex dynamics
arXiv:0801.4045 · doi:10.1063/1.2957013
Abstract
A magnetic nanoparticle in a vortex state is a promising candidate for the information storage. One bit of information corresponds to the upward or downward magnetization of the vortex core (vortex polarity). Generic properties of the vortex polarity switching are insensitive of the way how the vortex dynamics was excited: by an AC magnetic field, or by an electrical current. We study theoretically the switching process and describe in detail its mechanism, which involves the creation and annihilation of an intermediate vortex-antivortex pair.
REVTeX, 8 pages, 2 figures; to appear in a special issue of Low Temperature Physics in memory of A.M.Kosevich
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Cited by in corpus (9)
- X-ray imaging of the dynamic magnetic vortex core deformation
- Can immobile magnetic vortex nucleate a vortex-antivortex pair?
- Multiple vortex-antivortex pair generation in magnetic nanodots
- Regular and chaotic vortex core reversal by a resonant perpendicular magnetic field
- Topological changes of two-dimensional magnetic textures
- Off-centered immobile magnetic vortex under influence of spin-transfer torque
- Vortex Polarity Switching in Magnets with Surface Anisotropy
- Mechanism of Fast Axially--Symmetric Reversal of Magnetic Vortex Core
- Topological textures and their bifurcation processes in 2D ferromagnetic thin films