Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of planar Hall effect in the magnetic Weyl semimetal
  Co$_{3}$Sn$_{2}$S$_{2}$   We report detailed magneto-transport measurements on single crystals of the
magnetic Weyl semi-metal Co$_{3}$Sn$_{2}$S$_{2}$. Recently a large anomalous
Hall effect and chiral anomaly have been observed in this material which have
been suggested to be related to the large Berry curvature between the Weyl
points (Liu et al., Nature Physics (2018).). Another effect expected to result
from the topological band structure of magnetic Weyl materials is the planar
Hall effect (PHE). In this work we report observation of this intrinsic effect
in single crystals of Co$_{3}$Sn$_{2}$S$_{2}$. Crucially, the PHE is observed
for temperature $T \leq 74$~K which is much smaller than the ferromagnetic
ordering temperature $T_c = 175$~K\@. Together with the large anomalous Hall
conductivity, this further demonstrates the Topological character of
Co$_3$Sn$_2$S$_2$.

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The categories of this paper are: alg-geom
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The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: q-alg
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
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The categories of this paper are: solv-int
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The categories of this paper are: plasm-ph
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The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: funct-an
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The categories of this paper are: hep-ex