Current regulation of universal conductance fluctuations in bilayer graphene

Abstract

We report experimental results on the universal conductance fluctuations (UCFs) in the bilayer graphene system. The UCF properties under different temperatures, magnetic fields and current bias were investigated. An anomalous current-dependent UCF was observed: the rms amplitude of the conductance fluctuations is inversely proportional to the current bias. The detailed physical mechanisms were discussed by involving the confined scattering of chiral fermions in graphene. © IOP Publishing Ltd and Deutsche Physikalische Gesellschaft.