Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A room temperature polar ferromagnetic metal   The advent of long-range magnetic order in non-centrosymmetric compounds has
stimulated interest in the possibility of exotic spin transport phenomena and
topologically protected spin textures for applications in next-generation
spintronics. This work reports a novel wurtzite-structure polar magnetic metal,
identified as AA'-stacked (Fe0.5Co0.5)5-xGeTe2, which exhibits a Neel-type
skyrmion lattice as well as a Rashba-Edelstein effect at room temperature.
Atomic resolution imaging of the structure reveals a structural transition as a
function of Co-substitution, leading to the polar phase at 50% Co. This
discovery reveals an unprecedented layered polar magnetic system for
investigating intriguing spin topologies and ushers in a promising new
framework for spintronics.

27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
16
The categories of this paper are: stat
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
19
The categories of this paper are: eess
8
The categories of this paper are: hep-ex
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph