Uniform pseudomagnetic fields in graphene: corrections due to lattice deformations

TL;DR

This paper investigates how lattice deformations in graphene influence the generation of uniform pseudomagnetic fields, emphasizing the importance of stretching both zigzag and armchair edges for accurate field creation.

Contribution

It introduces lattice correction considerations into the description of pseudomagnetic fields in strained graphene, highlighting the necessity of stretching both edge types.

Findings

Lattice corrections significantly affect pseudomagnetic field generation.

Stretching both zigzag and armchair edges is essential for uniform fields.

Provides a refined model for strain-induced pseudomagnetic fields.

Abstract

Very recently, the standard description of electrons in strained graphene has been completed by the explicit inclusion of the lattice deformation. Here, the effect of these lattice corrections is taken into account to find the mechanical deformations that generate a uniform pseudomagnetic field inside strained graphene. The main difference when compared with previous proposals in a rectangular geometry, is the need to stretch both zigzag and armchair edges.