Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Superconductivity Controlled by Polarization in Field-Effect Devices of
  Confined Geometry   We propose a concept for superconducting electric field-effect devices based
on superconducting films sandwiched between ferroelectric layers. We provide
theoretical calculations that indicate how the field effect in these devices
could be amplified, which can be experimentally probed even at the current
stage of film fabrication techniques.

22
The categories of this paper are: chao-dyn
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org
18
The categories of this paper are: econ
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
8
The categories of this paper are: hep-ex
26
The categories of this paper are: bayes-an