Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Unconventional spin-orbit torque in transition metal
  dichalcogenide/ferromagnet bilayers from first-principles calculations   Motivated by recent observations of unconventional out-of-plane dampinglike
torque in \ch{WTe2}/Permalloy bilayer systems, we calculate the spin-orbit
torque generated in two-dimensional transition metal dichalcogenide
(TMD)-ferromagnet heterostructures using first-principles methods and linear
response theory. Our numerical calculation of spin-orbit torques in
\ch{WTe2}/Co and \ch{MoTe2}/Co heterostructures shows both conventional and
novel dampinglike torkances (torque per electric field) with comparable
magnitude, around $100~\hbar/2e~(\rm \Omega\cdot cm)^{-1}$, for an electric
field applied perpendicular to the mirror plane of the TMD layer. To gain
further insight into the source of dampinglike torque, we compute the spin
current flux between the TMD and Co layers and find good agreement between the
two quantities. This indicates that the conventional picture of dampinglike
spin-orbit torque, whereby the torque results from the spin Hall effect plus
spin transfer torque, largely applies to TMD/Co bilayer systems.

27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
11
The categories of this paper are: hep-lat