Acoustically Induced Giant Synthetic Hall Voltages in Graphene

Abstract

Any departure from graphene's flatness leads to the emergence of artificial gauge fields that act on the motion of the Dirac fermions through an associated pseudomagnetic field. Here, we demonstrate the tunability of strong gauge fields in non-local experiments using a large planar graphene sheet that conforms to the deformation of a piezoelectric layer by a surface acoustic wave. The acoustic wave induces a longitudinal and a giant synthetic Hall voltage in the absence of external magnetic fields. The superposition of a synthetic Hall potential and a conventional Hall voltage can annihilate the sample's transversal potential at large external magnetic fields. Surface acoustic waves thus provide a promising and facile avenue for the exploit of gauge fields in large planar graphene systems.

References in corpus (14)

• Energy gaps, topological insulator state and zero-field quantum Hall effect in graphene by strain engineering
• Gauge fields in graphene
• Electronic and optical properties of strained graphene and other strained 2D materials: a review
• Midgap states and charge inhomogeneities in corrugated graphene
• Programmable Extreme Pseudomagnetic Fields in Graphene by a Uniaxial Stretch
• Coupling of Surface Acoustic Waves to a Two Dimensional Electron Gas
• Synthetic electric fields and phonon damping in carbon nanotubes and graphene
• Surface acoustic wave propagation in monolayer graphene
• Interaction of surface acoustic waves with electronic excitations in graphene
• Quantum Hall response to time-dependent strain gradients in graphene
• Upscaling High-Quality CVD Graphene Devices to 100 Micron-Scale and Beyond
• Flip-chip gate-tunable acoustoelectric effect in graphene
• Sound waves induce Volkov-like states, band structure and collimation effect in graphene
• Acoustically driven Dirac electrons in monolayer graphene

Cited by in corpus (16)

• The Acoustophotoelectric Effect: Efficient Phonon-Photon-Electron Coupling in Zero-Voltage-Biased 2D SnS${}_2$ for Broadband Photodetection
• Electrically-driven amplification of terahertz acoustic waves in graphene
• Gate-tunable quantum acoustoelectric transport in graphene
• Semiclassical dynamics of electrons in space-time crystal: Magnetization, polarization, and current response
• Acousto-magnonic spin Hall effect in honeycomb antiferromagnets
• Coherent detection of the oscillating acoustoelectric effect in graphene
• Time-dependent strain-tuning topological magnon phase transition
• Gauge theory of giant phonon magnetic moment in doped Dirac semimetals
• Valley spin-acoustic resonance in MoS${}_2$ monolayers
• Quantum Nonlinear Acoustic Hall Effect and Inverse Acoustic Faraday Effect in Dirac Insulators
• Pseudogauge field driven acoustoelectric current in two-dimensional hexagonal Dirac materials
• Generation of a single-cycle surface acoustic wave pulse on LiNbO${}_3$ for application to thin film materials
• Anomalous acousto-current within the quantum Hall plateaus
• Observation of Shapiro Steps in the Charge Density Wave State Induced by Strain on a Piezoelectric Substrate
• Modulation of quantum geometry and its coupling to pseudo-electric field by dynamic strain
• Surface acoustic wave-driven valley current generation in intervalley coherent states