Frequency Dependent Ion Hopping Based on Lattice Gas Model

Abstract

The coupled phonon-lattice gas model is used to calculate the frequency dependent hopping rate of mobile ions in superionic conductors. It is found that the hopping rate is composed of several Gaussians including both contributions of the ion-phonon and ion-ion interactions. The calculated hopping rate is compared with the far infra-red conductivity for silver halides, AgI, AgCl and AgBr.