Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Skyrmion Strings and Anomalous Hall Effect in Double Exchange Systems   We perform Monte Carlo simulations to obtain quantitative results for the
anomalous Hall resistance, R_A, observed in colossal magnetoresistance
manganites. R_A arises from the interaction between the spin magnetization and
topological defects via spin-orbit coupling. We study these defects and how
they are affected by the spin-orbit coupling within the framework of the double
exchange model. The obtained anomalous Hall resistance is, in sign, order of
magnitude and shape, in agreement with experimental data.

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The categories of this paper are: patt-sol
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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: stat
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: funct-an
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The categories of this paper are: q-fin
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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: quant-ph
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: econ