Time-Depending Solutions to Spherical Harmonic Equations for Semiconductor Devices
In this paper we consider two models derived from the semiconductor Boltzmann equation by using the spherical harmonic expansion method. The first model contains only two terms of the expansion, the second also the third term. We look for space-homogeneous solutions to two Cauchy problems. Numerical results are found using a simple difference scheme and a comparison between the two models is shown.
KeywordsCauchy Problem High Electric Field Spherical Harmonic Expansion Velocity Overshoot Hydrodynamical Velocity
Unable to display preview. Download preview PDF.