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Issue 45, 2018
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Directional control of charge and valley currents in a graphene-based device

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Abstract

We propose a directional switching effect in a metallic device. To this 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 charges and valleys 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.

Graphical abstract: Directional control of charge and valley currents in a graphene-based device

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Article information


Submitted
31 Jul 2018
Accepted
31 Oct 2018
First published
31 Oct 2018

Phys. Chem. Chem. Phys., 2018,20, 28720-28725
Article type
Paper

Directional control of charge and valley currents in a graphene-based device

M. Berdakin, J. E. Barrios Vargas and L. E. F. Foa Torres, Phys. Chem. Chem. Phys., 2018, 20, 28720
DOI: 10.1039/C8CP04878A

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