Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability of vortex state of Fulde-Ferrell-Larkin-Ovchinnikov type in
  magnetic fields perpendicular to superconducting layers   Motivated by recent NMR data suggesting the presence of a
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) vortex lattice in magnetic fields
perpendicular to the superconducting plane in the heavy-fermion superconductor
CeCoIn5, we examine here the stability of FFLO states in quasi two-dimensional
(2D) superconductors under a perpendicular field. It is found that a 3D-like
portion of Fermi surfaces peculiar to CeCoIn5 stabilizes a FFLO vortex state
modulating along the field parallel to the c-axis and that the direction of
modulation in a FFLO vortex lattice is related to the characters of the normal
to FFLO and the Abrikosov to FFLO transitions.

19
The categories of this paper are: eess
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
20
The categories of this paper are: acc-phys
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
3
The categories of this paper are: physics
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
10
The categories of this paper are: q-bio