Directional control of charge and valley currents in a graphene-based device
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 direc...
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Veröffentlicht in: | Physical chemistry chemical physics : PCCP 2018-11, Vol.2 (45), p.2872-28725 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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.
We propose a directional switching effect in a metallic device. |
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ISSN: | 1463-9076 1463-9084 |
DOI: | 10.1039/c8cp04878a |