Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mixed Weyl semimetals and dissipationless magnetization control in
  insulators by spin-orbit torques   Reliable and energy efficient magnetization switching by electrically-induced
spin-orbit torques is of crucial technological relevance for spintronic devices
implementing memory and logic functionality. Here we predict that the strength
of spin-orbit torques and the related Dzyaloshinskii-Moriya interaction in
topologically non-trivial magnetic insulators can exceed by far that of
conventional metallic magnets. In analogy to the quantum anomalous Hall effect,
we explain this extraordinary response in absence of longitudinal currents as a
hallmark of magnetic monopoles in the electronic structure of systems that are
interpreted most naturally within the framework of mixed Weyl semimetals. We
thereby launch the effect of spin-orbit torque into the field of topology and
reveal its crucial role in mediating the topological phase transitions arising
due to the complex interplay between magnetization direction and momentum-space
topology. The concepts presented here may be exploited to understand and
utilize magneto-electric coupling phenomena in insulating ferromagnets and
antiferromagnets.

31
The categories of this paper are: ao-sci
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio