Abstract
Local elastic and dynamie properties of a 4096-atom model of amorphous silicon within the Stillinger–Weber potential are discussed. In particular the recently introduced frustration parameter, mean square displacements and Einstein frequencies are calculated. It is obtained that the isotropy associated with the Einstein frequencies is considerably less than that associated with the mean square displacements. It is also seen that the distribution function for the squares of the Einstein frequencies is symmetric whereas that related to the mean square displacements is strongly skewed to high values. In addition, the Keating potential is considered in an attempt to estimate the power of Q in the linewidth of the low-frequency dynamie structure factor for models of amorphous silicon.