Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic properties of a disordered Heisenberg binary spin system with
  long-range exchange   The influence of substitutional disorder on the magnetic properties of
disordered Heisenberg binary spin systems with long-range exchange integrals is
studied. The equation of motion for the magnon Green's function which is
decoupled by the Tyablikov approximation is solved in the
Blackman-Esterling-Berk(BEB) coherent potential approximation(CPA) framework,
where the environmental disorder term is treated by virtual crystal
approximation. The long-range exchange integrals include a power-law decaying
and an oscillating Ruderman-Kittel-Kasuya-Yosida(RKKY) exchange interaction.
The resulting spectral density, which is calculated by CPA self-consistent
equation, is then used to estimate the magnetization and Curie temperature. The
results show, in the case of the three-dimensional simple cubic systems, a
strong influence of ferromagnetic long-range exchange integrals on the
magnetization and Curie temperature of the systems, which is obviously
different from the calculation of short-range interaction.

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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ex
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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
15
The categories of this paper are: nucl-ex
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The categories of this paper are: nucl-th
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The categories of this paper are: econ
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The categories of this paper are: alg-geom
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The categories of this paper are: q-bio
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The categories of this paper are: nlin
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The categories of this paper are: acc-phys
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The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: solv-int