Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Thermally stable magnetic skyrmions in multilayer synthetic
  antiferromagnetic racetracks   A magnetic skyrmion is a topological magnetization structure with a
nanometric size and a well-defined swirling spin distribution, which is
anticipated to be an essential building block for novel skyrmion-based device
applications. We study the motion of magnetic skyrmions in multilayer synthetic
antiferromagnetic (SAF) racetracks as well as in conventional monolayer
ferromagnetic (FM) racetracks at finite temperature. There is an odd-even
effect of the constituent FM layer number on the skyrmion Hall effect (SkHE).
Namely, due to the suppression of the SkHE, the magnetic skyrmion has no
transverse motion in multilayer SAF racetracks packed with even FM layers. It
is shown that a moving magnetic skyrmion is stable even at room temperature
($T=300$ K) in a bilayer SAF racetrack but it is destructed at $T=100$ K in a
monolayer FM racetrack. Our results indicate that the SAF structures are
reliable and promising candidates for future applications in
skyrmion-electronics and skyrmion-spintronics.

31
The categories of this paper are: ao-sci
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
7
The categories of this paper are: hep-th
29
The categories of this paper are: funct-an
20
The categories of this paper are: acc-phys
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
0
The categories of this paper are: hep-ph