Pseudo-Magnetic Quantum Hall Effect In Oscillating Graphene

TL;DR

This paper predicts an oscillating quantum Hall effect in stressed graphene, leading to a large, frequency-dependent pseudo-magneto-resistance caused by strain-induced pseudo-magnetic fields.

Contribution

It introduces the concept of oscillating pseudo-magnetic fields in graphene and analyzes their impact on resistance, a novel effect not previously explored.

Findings

Pseudo-magnetic fields cause oscillating resistance in graphene.

Resistance depends on oscillation frequency and amplitude.

Potential for experimental observation of oscillating quantum Hall phenomena.

Abstract

When a graphene layer is stressed, the strain alters the phase an electron accumulates hopping between sites in a way that can be modeled as arising from a pseudo-magnetic vector potential. We examine the case of an oscillating graphene ribbon and explore a new effect - an oscillating resistance arising from an oscillating quantum Hall effect. This pseudo-magneto-resistance is large, and depends upon the frequency and the amplitude of the acoustic oscillations. We calculate the consequences for experiment.