Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spintronics in MoS_2 monolayer quantum wires   We study analytically and numerically spin effects in MoS_2 monolayer
armchair quantum wires and quantum dots. The interplay between intrinsic and
Rashba spin orbit interactions induced by an electric field leads to helical
modes, giving rise to spin filtering in time-reversal invariant systems. The
Rashba spin orbit interaction can also be generated by spatially varying
magnetic fields. In this case, the system can be in a helical regime with
nearly perfect spin polarization. If such a quantum wire is brought into
proximity to an s-wave superconductor, the system can be tuned into a
topological phase, resulting in midgap Majorana fermions localized at the wire
ends.

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The categories of this paper are: hep-ex
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
5
The categories of this paper are: gr-qc
25
The categories of this paper are: patt-sol
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
22
The categories of this paper are: chao-dyn
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
18
The categories of this paper are: econ