Rippled Graphene in an In-Plane Magnetic Field: Effects of a Random Vector Potential

TL;DR

This study investigates how an in-plane magnetic field affects rippled graphene, revealing orbital effects like suppression of weak localization and anisotropic magnetoresistance, which help estimate ripple characteristics.

Contribution

It provides experimental evidence of how a random vector potential influences electronic transport in rippled graphene under in-plane magnetic fields.

Findings

Weak localization is suppressed by the in-plane magnetic field.

Anisotropic magnetoresistance is observed due to Lorentz forces.

Ripple amplitude and correlation length are quantitatively estimated.

Abstract

We report measurements of the effects of a random vector potential generated by applying an in-plane magnetic field to a graphene flake. Magnetic flux through the ripples cause orbital effects: phase-coherent weak localization is suppressed, while quasi-random Lorentz forces lead to anisotropic magnetoresistance. Distinct signatures of these two effects enable an independent estimation of the ripple amplitude and correlation length.