Electronic transport in graphene with out-of-plane disorder

Real-world graphene samples often contain out-of-plane disorder (ripples, wrinkles, folds) affecting charge carrier scattering and electronic transport. This study uses tight-binding and density functional calculations to analyze ballistic charge-carrier transmission across these defects, considering lattice relaxation. Transmission oscillations in commensurate wrinkles are attributed to interference between intra- and interlayer transport channels, while incommensurate wrinkles show minimal backscattering. The suppression of backscattering highlights the role of lattice commensuration in electronic transmission, offering guidelines for controlling graphene's transport properties.

Yifei Guan, Oleg V. Yazyev