Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin polarization control in a 2-dimensional semiconductor   Long carrier spin lifetimes are a double-edged sword for the prospect of
constructing "spintronic" logic devices: Preservation of the logic variable
within the transport channel or interconnect is essential to successful
completion of the logic operation, but any spins remaining past this event will
pollute the environment for subsequent clock cycles. Electric fields can be
used to manipulate these spins on a fast timescale by careful interplay of
spin-orbit effects, but efficient controlled depolarization can only be
completely achieved with amenable materials properties. Taking III-VI
monochalcogenide monolayers as an example 2D semiconductor, we use symmetry
analysis, perturbation theory, and ensemble calculation to show how this
longstanding problem can be solved by suitable manipulation of conduction
electrons.

2
The categories of this paper are: math
30
The categories of this paper are: q-alg
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
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
22
The categories of this paper are: chao-dyn
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex