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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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Publication details

The article was received on 31 Jul 2018, accepted on 31 Oct 2018 and first published on 31 Oct 2018


Article type: Paper
DOI: 10.1039/C8CP04878A
Citation: Phys. Chem. Chem. Phys., 2018, Advance Article
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    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, Advance Article , DOI: 10.1039/C8CP04878A

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