Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin-polarized current in non-collinear antiferromagnets   Noncollinear antiferromagnets, such as Mn$_3$Sn and Mn$_3$Ir, were recently
shown to be analogous to ferromagnets in that they have a large anomalous Hall
effect. Here we show that these materials are similar to ferromagnets in
another aspect: the charge current in these materials is spin-polarized. In
addition, we show that the same mechanism that leads to the spin-polarized
current also leads to a transverse spin current, which has a distinct symmetry
and origin from the conventional spin Hall effect. We illustrate the existence
of the spin-polarized current and the transverse spin current by performing
\emph{ab initio} microscopic calculations and by analyzing the symmetry. We
discuss possible applications of these novel spin currents, such as an
antiferromagnetic metallic or tunneling junction.

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The categories of this paper are: supr-con
6
The categories of this paper are: astro-ph
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
21
The categories of this paper are: adap-org
17
The categories of this paper are: q-fin
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
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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: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: nucl-ex
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The categories of this paper are: cmp-lg
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The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn