A drift-diffusion subband model for the double-gate MOSFET

A self-consistent model for charged particles, accounting for quantum confinement, diffusive transport and electrostatic interaction is considered. In this coupled quantum-classical system, the coupling occurs in the momentum variable: the electrons are like point particles in the direction parallel to the gas (classical transport) while they behave like waves in the transversal direction (quantum description). Numerical implementation of this model provides a simulation of the transport of charge carriers in a quasi bidimensional electron gas confined in a nanostructure.