Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnitoelastic interaction and long-range magnetic ordering in
  two-dimesional ferromagnetics   The influence of magnitoelastic (ME) interaction on the stabilization of
long-range magnetic order (LMO) in the two-dimensional easy-plane ferromagnetic
is investigated in this work. The account of ME exchange results in the root
dispersion law of magnons and appearance of ME gap in the spectra of elementary
excitations. Such a behavior of the spectra testifies to the stabilization of
LMO and finite Curie's temperature.

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The categories of this paper are: dg-ga
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
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The categories of this paper are: bayes-an
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The categories of this paper are: q-bio
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The categories of this paper are: hep-ph
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The categories of this paper are: stat
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The categories of this paper are: adap-org
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ex
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The categories of this paper are: nlin