Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Magnetic Domain Walls in Single-Phase and Phase-Separated Double
  Exchange Systems   We investigate the structure of magnetic domain walls in a classical double
exchange ferromagnet, evaluating domain wall energies and charges. Three
different cases are studied: (i) a conventional smooth Bloch wall, (ii) an
abrupt Ising-type wall, which is shown to have lower energy at small values of
carrier concentration, and (iii) stripe wall, corresponding to the two
ferromagnetic domains being separated by a stripe of another,
antiferromagnetic, phase. General aspects of energy balance and geometry of
phase-separated states are discussed in this context. It is speculated that
domain walls of the latter type may be responsible for the unusual transport
properties of certain manganate films.

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The categories of this paper are: comp-gas
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
0
The categories of this paper are: hep-ph
32
The categories of this paper are: atom-ph
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: hep-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: alg-geom
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The categories of this paper are: q-fin
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The categories of this paper are: nucl-ex
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The categories of this paper are: plasm-ph