Strongly Modified Transport in Graphene Systems using High Intensity Surface Acoustic Waves

Surface acoustic waves (SAWs) have previously been used to study 2D systems through acoustoelectric transport to generate currents, probe the dynamics of their conductivity and diffuse excitons. Here, we demonstrate the use of high intensity SAWs and standing SAWs to strongly modify the conductivity of graphene systems, as well as the appearance of an intensity-dependent transport gap. Our findings suggest that SAWs can be used to engineer a variety of quantum devices beyond traditional acoustoelectric transport, and may be used as a time-dependent supplement to Moiré patterns and other static periodic potentials to modify electronic behavior in 2D material systems.