Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic skyrmion interactions in the micromagnetic framework   Magnetic skyrmions are localized swirls of magnetization with a non-trivial
topological winding number. This winding increases their robustness to
superparamagnetism and gives rise to a myriad of novel dynamical properties,
making them attractive as next-generation information carriers. Recently the
equation of motion for a skyrmion was derived using the approach pioneered by
Thiele, allowing for macroscopic skyrmion systems to be modeled efficiently.
This powerful technique suffers from the prerequisite that one must have a
priori knowledge of the functional form of the interaction between a skyrmion
and all other magnetic structures in its environment. Here we attempt to
alleviate this problem by providing a simple analytic expression which can
generate arbitrary repulsive interaction potentials from the micromagnetic
Hamiltonian. We also discuss a toy model of the radial profile of a skyrmion
which is accurate for a wide range of material parameters.

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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: eess
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: physics
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The categories of this paper are: funct-an