  We present the implementation and application of a multiphysics simulation
technique to carrier dynamics under electromagnetic excitation in supported
two-dimensional electronic systems. The technique combines ensemble Monte Carlo
(EMC) for carrier transport with finite-difference time-domain (FDTD) for
electrodynamics and molecular dynamics (MD) for short-range Coulomb
interactions among particles. We demonstrate the use of this EMC/FDTD/MD
technique by calculating the room-temperature dc and ac conductivity of
graphene supported on SiO2.
