Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Chiral domain wall dynamics in magnetic heterostructures with bulk
  Dzyaloshinskii-Moriya interactions   In this work, dynamics of chiral domain walls in long and narrow magnetic
heterostructures based on non-centrosymmetric chiral magnets with bulk
Dzyaloshinskii-Moriya interactions (DMI) and perpendicular magnetic anisotropy
is systematically investigated. The driving forces can be out-of-plane magnetic
fields and in-plane currents, correspondingly both steady and precessional
flows are considered. Their dividing points (the Walker critical field and
current density) are obtained as functions of bulk DMI strength
($D_{\mathrm{b}}$) and the ratio ($\kappa$) of total (crystalline plus shape)
anisotropy in the hard axis over that in the easy one. When far beyond Walker
breakdown, the dependence curve of wall velocity on external in-plane bias
field takes parabolic shape around the compensation point where the total
in-plane field disappears. The center shift is determined by $D_{\mathrm{b}}$,
$\kappa$, and the wall's topological charge, thus can be used to measure the
bulk DMI strength in chiral magnets.

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The categories of this paper are: math
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
12
The categories of this paper are: nucl-th
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
20
The categories of this paper are: acc-phys
26
The categories of this paper are: bayes-an
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol