Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-flop phase transition in the orthorhombic antiferromagnetic
  topological semimetal Cu0.95MnAs   The orthorhombic antiferromagnetic compound CuMnAs was recently predicted to
be an antiferromagnetic Dirac semimetal if both the Ry gliding and S2z
rotational symmetries are preserved in its magnetic ordered state. In our
previous work on Cu0.95MnAs and Cu0.98Mn0.96As, we showed that in their low
temperature commensurate antiferromagnetic state the b axis is the magnetic
easy axis, which breaks the S2z symmetry. As a result, while the existence of
Dirac fermions is no longer protected, the polarized surface state makes this
material potentially interesting for antiferromagnetic spintronics. In this
paper, we report a detailed study of the anisotropic magnetic properties and
magnetoresistance of Cu0.95MnAs and Cu0.98Mn0.96As. Our study shows that in
Cu0.95MnAs the b axis is the easy axis and the c axis is the hard axis.
Furthermore, it reveals that Cu0.95MnAs features a spin-flop phase transition
at high temperatures and low fields when the field is applied along the easy b
axis, resulting in canted antiferromagnetism. However, no metamagnetic
transition is observed in Cu0.98Mn0.96As, indicating that the magnetic
interactions in this system are very sensitive to Cu vacancies and Cu/Mn site
mixing.

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The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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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: hep-th
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: math-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: econ
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The categories of this paper are: nlin