Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Anomalous Photoresponse of Heavily Doped GaAs/AlAs Superlattices with
  Electric Domains   The strong effect of weak interband illumination on tunneling transport in
doped GaAs/AlAs superlattices was found under conditions of electric domain
formation. The photoresponse at voltages below the threshold one (before the
domain formation) did not observe. The phenomenon is referred to strong carrier
depletion inside the triangular high-field domain. The domain modes
transformations under the illumination were also found.

33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
19
The categories of this paper are: eess
2
The categories of this paper are: math
9
The categories of this paper are: nlin
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics