A new method for extracting carrier mobility from Monte Carlo device simulation

In this brief, a new method for extracting carrier mobility from the Monte Carlo device simulation is presented. Unlike the conventional method which is based on taking the time-average of the rate of change of momentum before and after the scattering, this method utilizes the spherical harmonic expansion of the carrier distribution function and an analytical expression for the relaxation time. The new method produces a much smoother result than the time-average method, particularly in low electric field regions.