Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Oscillations of skyrmion clusters in Co/Pt multilayer nanodots   In this work we study the oscillations of the skyrmion cores in a multilayer
nanodot as a function of the number of skyrmions hosted in the system. When all
the skyrmions in the nanodot have the same core radius, and after applying a
perpendicular spin-polarized current, a relaxation process takes place towards
an equilibrium configuration that is accompanied by coherent damped
oscillations of the skyrmion cores, whose frequency depends on the number of
skyrmions present in the nanodot. Additionally, we found that the oscillation
frequency is directly related to the total energy of the system.

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The categories of this paper are: hep-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
18
The categories of this paper are: econ
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
20
The categories of this paper are: acc-phys
31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
14
The categories of this paper are: math-ph