Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of spin splitting torque in a collinear antiferromagnet RuO2   Current-induced spin torques provide efficient data writing approaches for
magnetic memories. Recently, the spin splitting torque (SST) was theoretically
predicted (R. Gonz\'alez-Hern\'andez et al. Phys. Rev. Lett. 126, 127701
(2021)), which combines advantages of conventional spin transfer torque (STT)
and spin-orbit torque (SOT) as well as enables controllable spin polarization.
Here we provide the experimental evidence of SST in collinear antiferromagnet
RuO2 films. The spin current direction is found to be correlated to the crystal
orientation of RuO2 and the spin polarization direction is dependent on
(parallel to) the N\'eel vector. These features are quite characteristic for
the predicted SST. Our finding not only present a new member for the spin
torques besides traditional STT and SOT, but also proposes a promising spin
source RuO2 for spintronics.

21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
13
The categories of this paper are: quant-ph
27
The categories of this paper are: comp-gas