Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Surface magnetic anisotropy at a compensated interface of ferromagnetic
  antiferromagnetic bilayer   The periodic deviations of ferromagnetic and antiferromagnetic spins from
corresponding uniform configurations are shown to be energetically favorable
close to a compensated interface of ferromagnetic antiferromagnetic bilayer.
The amplitude of the deviations decreases exponentially into the film volumes
as a function of a coordinate perpendicular to the interface. The interaction
energy is found to be proportional to a square of a scalar product of unit
ferromagnetic and antiferromagnetic vectors.

5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
17
The categories of this paper are: q-fin