Particle Transport in Graphene Nanoribbon Driven by Ultrashort Pulses
  We study charge transport in a graphene zigzag nanoribbon driven by an external time-periodic kicking potential. Using the exact solution of the time-dependent Dirac equation with a delta-kick potential acting in each period, we study the time evolution of the quasienergy levels and the time-dependent optical conductivity. By variation of the kicking parameters, the conductivity becomes widely tunable. 
D. Babajanov, D.U. Matrasulov and R. Egger
cond-mat.mes-hall