Gauge fields in corrugated graphene.

M. Katsnelson,

Institute for Molecules and Materials

Radboud University of Nijmegen, The Netherlands.

Being a truly two-dimensional crystal, graphene is rippled, due to both intrinsic thermal instability and stresses created by a substrate. These ripples result in a pseudomagnetic gauge field which effects essentially on the dynamics of charge carriers. In particular, they can lead to appearance of topologically protected zero-energy pseudo-Landau levels and to charge inhomogeneity. Some recent experimental data seem to support a hypothesis that the pseudomagnetic field in corrugated graphene is the main scattering factor limiting the electron mobility.