Imaging universal conductance fluctuations in graphene.

  title={Imaging universal conductance fluctuations in graphene.},
  author={Mario F. Borunda and Jesse Berezovsky and R. M. Westervelt and Eric J Heller},
  journal={ACS nano},
  volume={5 5},
We study conductance fluctuations (CF) and the sensitivity of the conductance to the motion of a single scatterer in two-dimensional massless Dirac systems. Our extensive numerical study finds limits to the predicted universal value of CF. We find that CF are suppressed for ballistic systems near the Dirac point and approach the universal value at sufficiently strong disorder. The conductance of massless Dirac fermions is sensitive to the motion of a single scatterer. CF of order e(2)/h result… CONTINUE READING