Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Induction of phase-slip lines in a thin, wide superconducting film by an
  rf electromagnetic field   The appearance of phase-slip lines, induced by an rf field, was observed
experimentally in wide superconducting films in which the destruction of
superconductivity by a dc current is associated with the formation of
phase-slip lines. The characteristics of the separation of the film into
superconducting and nonuniform, isothermal, nonequilibrium regions (phase-slip
lines) under electromagnetic irradiation were studied.

30
The categories of this paper are: q-alg
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
23
The categories of this paper are: solv-int
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph