Pseudo Electric Field and Pumping Valley Current in Graphene Nano-bubbles

Abstract

The extremely high pseudo-magnetic field emerging in strained graphene suggests that an oscillating nano-deformation will induce a very high current even without electric bias. In this paper, we demonstrate the sub-terahertz (THz) dynamics of a valley-current and the corresponding charge pumping with a periodically excited nano-bubble. We discuss the amplitude of the pseudo-electric field and investigate the dependence of the pumped valley current on the different parameters of the system. Finally, we report the signature of extra-harmonics generation in the valley current that might lead to potential modern devices development operating in the nonlinear regime

7 pages

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Cited by in corpus (4)

• Valley-dependent transport through graphene quantum dots due to proximity-induced, staggered spin-orbit couplings
• Quantum transport of Dirac fermions in selected graphene nanosystems away from the charge-neutrality point
• Modulation of quantum geometry and its coupling to pseudo-electric field by dynamic strain
• Transport of Dirac magnons driven by gauge fields