Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Band splitting and relative spin alignment in bilayer systems   Influence of relative spin alignment on the band splitting and magnetic
excitations in the bilayer correlated systems is studied. Splitting occures to
be large or small depending on orientation of staggered spins of layers. Change
of the ground state configuration with doping is shown. Behavior of the bilayer
splitting in Bi-based cuprate allows to suppose that superconducting transition
is accompanied by transformation of spin configuration of system.

31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
26
The categories of this paper are: bayes-an
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
36
The categories of this paper are: cmp-lg
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
21
The categories of this paper are: adap-org