Noise obtained from the scattered packet method

A numerical method is developed for solving the transient Boltzmann equation. The scattered packet method (SPM) gives the carrier distribution function when an electric field is applied. Using that method we can also follow the evolution and the spreading in the k‐space of a packet of carriers, due to the field and the collisions with the lattice and ionized impurities. The current correlation function and the diffusion coefficient can then be computed in a simple way.