Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Polarization-induced Rashba spin-orbit coupling in structurally
  symmetric III-Nitride quantum wells   The effective linear coupling coefficient and the total spin-splitting are
calculated in Ga- and N- face InGaN quantum wells. Alloy content, geometry, and
gate voltage affect an internal field and an electron density distribution in
the growth direction that has direct effect on a spin-splitting. The sign of
structural inversion asymmetry (SIA) spin-orbit coupling coefficient depends on
an internal electric field in the well that results in different signs for
Ga-face and N-face III-Nitride structures. The effective linear coupling
coefficient is always positive because of the Dresselhaus-type contribution
that is a major one in quantum wells under consideration. The magnitude of the
spin-splitting is comparable with that experimentally observed in III-Nitrides
and III-V zinc-blende structures.

3
The categories of this paper are: physics
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
1
The categories of this paper are: cs
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
29
The categories of this paper are: funct-an
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int