Álvaro Perales et al 2004 Nanotechnology 15 S229 doi:10.1088/0957-4484/15/4/021
Álvaro Perales1, Luis L Bonilla2 and Ramón Escobedo2
Show affiliationsWe present and analyse solutions of a recent derivation of a drift-diffusion model of miniband transport in strongly coupled superlattices. The model is obtained from a single-miniband Boltzmann–Poisson transport equation with a BGK (Bhatnagar–Gross–Krook) collision term by means of a consistent Chapman–Enskog expansion. The reduced drift-diffusion equation is solved numerically and travelling field domains and current oscillations are obtained. A broad range of frequencies can be achieved, depending on the model parameters, in good agreement with available experiments on GaAs/AlAs superlattices.
66.30.H- Self-diffusion and ionic conduction in nonmetals
Issue 4 (April 2004)
Received 1 October 2003
Published 20 February 2004
Álvaro Perales et al 2004 Nanotechnology 15 S229
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