Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenological description of bright domain walls in
  ferroelectric-antiferroelectric layered chalcogenides   Recently, a layered ferroelectric CuInP2Se6 was shown to exhibit domain walls
with locally enhanced piezoresponse - a striking departure from the
observations of nominally zero piezoresponse in most ferroelectrics. Although
it was proposed that such "bright" domain walls are phase-boundaries between
ferri- and antiferroelectrically ordered regions of the materials, the physical
mechanisms behind the existence and response of these boundaries remain to be
understood. Here, using Landau-Ginzburg-Devonshire phenomenology combined with
four sub-lattices model, we describe quantitatively the bright-contrast and
dark-contrast domain boundaries between the antiferroelectric, ferroelectric or
ferrielectric long-range ordered phases in a layered
ferroelectric-antiferroelectric ferroics, such as CuInP2(S1-ySey)6

12
The categories of this paper are: nucl-th
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex
3
The categories of this paper are: physics
18
The categories of this paper are: econ
2
The categories of this paper are: math
9
The categories of this paper are: nlin
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph