Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: DC Josephson Effect in SNS Junctions of Anisotropic Superconductors   A formula for the Josephson current between two superconductors with
anisotropic pairing symmetries is derived based on the mean-field theory of
superconductivity. Zero-energy states formed at the junction interfaces is one
of basic phenomena in anisotropic superconductor junctions. In the obtained
formula, effects of the zero-energy states on the Josephson current are taken
into account through the Andreev reflection coefficients of a quasiparticle. In
low temperature regimes, the formula can describe an anomaly in the Josephson
current which is a direct consequence of the exsitence of zero-energy states.
It is possible to apply the formula to junctions consist of superconductors
with spin-singlet Cooper pairs and those with spin-triplet Cooper pairs.

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The categories of this paper are: hep-ph
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The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
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The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
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The categories of this paper are: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
32
The categories of this paper are: atom-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con