Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ginzburg-Landau theory of superconducting surfaces under electric fields   A boundary condition for the Ginzburg-Landau wave function at surfaces biased
by a strong electric field is derived within the de Gennes approach. This
condition provides a simple theory of the field effect on the critical
temperature of superconducting layers.

24
The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
25
The categories of this paper are: patt-sol
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
29
The categories of this paper are: funct-an
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
19
The categories of this paper are: eess
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
31
The categories of this paper are: ao-sci