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We present a study on the uniformity of the pseudomagnetic field in grapheneas a function of the relative orientation between the graphene lattice andstraining directions. For this, we strained a regular micron-sized graphenehexagon by deforming it symmetrically by displacing three of its edges. Bysimulations, we found that the pseudomagnetic field is strongest if the strainis applied perpendicular to the armchair direction of graphene. For a hexagonwith a side length of 1 ${\rm \mu}$m, the pseudomagnetic field has a maximum of1.2 T for an applied strain of 3.5% and it is uniform (variance $< 1$%) withina circle with a diameter of $\sim 520$ nm. This diameter is on the order of thetypical diameter of the laser spot in a state-of-the-art confocal Ramanspectroscopy setup, which suggests that observing the pseudomagnetic field inmeasurements of shifted magneto-phonon resonance is feasible.

Uniformity of the pseudomagnetic field in strained graphene