Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photogalvanic current in a double quantum well   We study the in-plane stationary current caused by phototransitions between
the states of a double quantum well. The electric polarization of light has
both vertical and in-plane components. The stationary current originates from
the periodic vibration of electrons between two non-equivalent quantum wells
caused by the normal component of the alternating electric field with
simultaneous in-plane acceleration/deceleration by the in-plane component of
electric field. The quantum mechanism of the stationary current is conditioned
by in-plane transition asymmetry which appears due to the indirect
phototransitions with the participation of impurity scattering. The
photocurrent has a resonant character corresponding to the equality of the
photon energy to the distance between subbands. It is found that the current
appears as a response to the linear-polarized light.

31
The categories of this paper are: ao-sci
7
The categories of this paper are: hep-th
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
17
The categories of this paper are: q-fin
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph