Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Interplay between magnetism and superconductivity in URhGe   The magnetization rotation transition occurs in the itinerant ferromagnet
URhGe when the field about 12T is applied in direction perpendicular to
spontaneous magnetization in the plane of the smallest magnetic anisotropy
energy.The transition is accompanied by the maximum of resistivity in the
normal state and by reentrance of superconductivity at lower temperatures in
the field interval between 8 and 13 Tesla [F.Levy et al, Science, to be
published (2005)].
  We discuss the magnetization orientation transition and the modification of
triplet pairing superconducting state coexisting with ferromagnetism up to the
fields about 2 Tesla and then reappearing in the broad vicinity of the
transition.
  The nonsymmorphic space group crystal symmetry of ferromagnetic URhGe allows
existance of antiferromagnetic ordering of magnetic moments of pairs of uranium
atoms along a-axis. We show that the amplitude of this weak antiferromagnetic
ordering increases below the phase transition into superconducting state due to
Cooper pairs spontaneous magnetism.

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The categories of this paper are: nlin
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The categories of this paper are: econ
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The categories of this paper are: adap-org
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
23
The categories of this paper are: solv-int
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The categories of this paper are: supr-con
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The categories of this paper are: physics
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
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The categories of this paper are: math
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat