Signature of pseudodiffusive transport in mesoscopic topological insulators

This manuscript demonstrates signatures of pseudodiffusive electrical transport through evanescent modes in topological insulator surface states. Pseudodiffusive transport is a property unique to Dirac Fermions at low number density, and disorder. The authors show that flicker noise or 1/f noise can detect the crossover from pseudodiffusive to diffusive regime in Dirac systems beyond graphene.