Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Vortex Resonance in Non-planar Ferromagnetic Dots   In planar structures, the vortex resonance frequency changes little as a
function of an in-plane magnetic field as long as the vortex state persists.
Altering the topography of the element leads to a vastly different dynamic
response that arises due to the local vortex core confinement effect. In this
work, we studied the magnetic excitations in non-planar ferromagnetic dots
using a broadband microwave spectroscopy technique. Two distinct resonance
frequency ranges were observed depending on the position of the vortex core
controllable by applying a relatively small magnetic field. The micromagnetic
simulations are in qualitative agreement with the. experimental results.

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The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: quant-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: atom-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: nlin
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The categories of this paper are: chem-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
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The categories of this paper are: math-ph