Magnetic vortex core dynamics in cylindrical ferromagnetic dots.
TLDR
Direct imaging by means of x-ray photoemission electron microscopy of the dynamics of magnetic vortices confined in micron-sized circular permalloy dots that are 30 nm thick finds that the vortex core positions oscillate in a self-induced magnetostatic potential well after the in-plane magnetic field is turned off.Abstract:
We report direct imaging by means of x-ray photoemission electron microscopy of the dynamics of magnetic vortices confined in micron-sized circular permalloy dots that are 30 nm thick. The vortex core positions oscillate on a 10 ns time scale in a self-induced magnetostatic potential well after the in-plane magnetic field is turned off. The measured oscillation frequencies as a function of the aspect ratio of the dots are in agreement with theoretical calculations presented for the same geometry.read more
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Current-induced skyrmion dynamics in constricted geometries
TL;DR: This work shows by micromagnetic simulations that the current-induced motion of skyrmions in the presence of geometrical boundaries is very different from that in an infinite plane, and shows that a single skyrMion can be created by an electric current in a simple constricted geometry comprising a plate-shaped specimen of suitable size and geometry.
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Electrical switching of the vortex core in a magnetic disk
Keisuke Yamada,Shinya Kasai,Yoshinobu Nakatani,Kensuke Kobayashi,Hiroshi Kohno,André Thiaville,Teruo Ono +6 more
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Current-induced skyrmion dynamics in constricted geometries
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Inertia and Chiral Edge Modes of a Skyrmion Magnetic Bubble
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Micromagnetic computer simulations of spin waves in nanometre-scale patterned magnetic elements
TL;DR: In this article, the authors summarize the recent results of simulations of the excitation and propagation and other novel wave characteristics of spin waves, highlighting how the micromagnetic computer simulation approach contributes to an understanding of spin dynamics of nanomagnetism and considering some of the merits of numerical simulation studies.
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