Transport in a Graphene Strain Superlattice

Deformations of graphene are predicted to lead to novel electronic states, such as the opening of band gaps, flat bands, the generation of pseudo-magnetic fields. We demonstrate how controllable, device-compatible strain patterns in graphene can be engineered by depositing graphene on periodic spherical curvature patterns in the form of closely packed nanospheres. Our transport experiments show how the resulting strain superlattice leads to emergent behavior such as mini-band conductance dips, pseudomagnetic fields, and unusual conductance oscillations.