Generating quantizing pseudomagnetic fields by bending graphene ribbons

TL;DR

This paper demonstrates that bending graphene ribbons into a circular arc can generate strong, uniform pseudomagnetic fields exceeding 10 Tesla, facilitating experimental observation of pseudo-Landau quantization.

Contribution

It introduces a simple in-plane bending method to produce uniform pseudomagnetic fields in graphene, improving upon previous complex geometries.

Findings

Bending graphene into a circular arc can generate fields over 10T.

The proposed arc geometry is simpler and more experimentally feasible.

Scalar potential effects are negligible in this configuration.

Abstract

We analyze the mechanical deformations that are required to create uniform pseudomagnetic fields in graphene. It is shown that, if a ribbon is bent in-plane into a circular arc, this can lead to fields exceeding 10T, which is sufficient for the observation of pseudo-Landau quantization. The arc geometry is simpler than those suggested previously and, in our opinion, has much better chances to be realized experimentally soon. The effects of a scalar potential induced by dilatation in this geometry is shown to be negligible.