Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Efficient spin injection and giant magnetoresistance in Fe/MoS$_2$/Fe
  junctions   We demonstrate giant magnetoresistance in Fe/MoS$_2$/Fe junctions by means of
\textit{ab-initio} transport calculations. We show that junctions incorporating
either a mono- or a bi-layer of MoS$_2$ are metallic and that Fe acts as an
efficient spin injector into MoS$_2$ with an efficiency of about 45\%. This is
the result of the strong coupling between the Fe and S atoms at the interface.
For junctions of greater thickness a maximum magnetoresistance of $\sim$300\%
is obtained, which remains robust with the applied bias as long as transport is
in the tunneling limit. A general recipe for improving the magnetoresistance in
spin valves incorporating layered transition metal dichalcogenides is proposed.

18
The categories of this paper are: econ
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
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The categories of this paper are: bayes-an
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
30
The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
19
The categories of this paper are: eess