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arXiv · 0906.5552

Theory of vortex states in magnetic nanodisks with induced Dzyaloshinskii-Moriya interactions

A. B. Butenko·A. A. Leonov·A. N. Bogdanov·U. K. Rößler
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Abstract

Vortex states in magnetic nanodisks are essentially affected by surface/interface induced Dzyaloshinskii-Moriya interactions. Within a micromagnetic approach we calculate the equilibrium sizes and shape of the vortices as functions of magnetic field, the material and geometrical parameters of nanodisks. It was found that the Dzyaloshinskii-Moriya coupling can considerably increase sizes of vortices with "right" chirality and suppress vortices with opposite chirality. This allows to form a bistable system of homochiral vortices as a basic element for storage applications.

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A. B. Butenko, A. A. Leonov, A. N. Bogdanov, U. K. Rößler. 2009-06-30. Theory of vortex states in magnetic nanodisks with induced Dzyaloshinskii-Moriya interactions. https://doi.org/10.1103/physrevb.80.134410

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