Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of vortex structure in Josephson junctions with multiple
  tunneling channels: Vortex enlargement as a probe of $\pm s$-wave
  superconductivity   We theoretically study Josephson vortex structures in Josephson junctions
which have multiple tunneling channels caused by multiple superconducting gaps.
Deriving "coupled sine-Gordon equations" from the free-energy taking account of
the multiple tunneling channels, we examine two typical situations, a heterotic
junction composed of multigap-superconductor, insulator, and single-gap
superconductor, and a grain-boundary junction formed by two identical multigap
superconductors. Then, we reveal in both situations that the magnetic field
distribution of the Josephson vortex for $\pm s$-wave superconductivity is more
enlarged than that for s-wave without sign change between the order parameters.
Its mechanism is ascribed to a cancellation of the multiple Josephson currents.
We display such an anomalous Josephson vortex and suggest how to evaluate the
enlargement.

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The categories of this paper are: astro-ph
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: dg-ga
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The categories of this paper are: adap-org
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: quant-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: cs
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The categories of this paper are: physics
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The categories of this paper are: chem-ph