Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 0-$\pi$ transition in magnetic triplet superconductor Josephson
  junctions   We examine a Josephson junction involving two arbitrary equal-spin-pairing
unitary triplet superconductors and a ferromagnetic tunneling barrier. Using
perturbation theory, we show how the interaction of the barrier moment with the
spin of the tunneling triplet Cooper pairs can reverse the sign of the
Josephson charge current. This also results in a Josephson spin current, which
contains a phase-independent contribution due to reflection processes at the
barrier. We verify our analytic predictions using a non-perturbative
Bogoliubov-de Gennes method.

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The categories of this paper are: patt-sol
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
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The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-fin
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph