Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Directional control of charge and valley currents in a graphene-based
  device   We propose a directional switching effect in a metallic device. To such end
we exploit a graphene-based device with a three-terminal geometry in the
presence of a magnetic field. We show that unidirectional charge and valley
currents can be controlled by the Fermi energy and the magnetic field direction
in the active device. Interestingly, unidirectional transport of charge and
valley is generated between two-terminals at the same bias voltage.
Furthermore, we quantify the valley depolarization as a function of disorder
concentration. Our results open a way for active graphene-based valleytronics
devices.

6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
23
The categories of this paper are: solv-int
10
The categories of this paper are: q-bio
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
27
The categories of this paper are: comp-gas
7
The categories of this paper are: hep-th