Displacement correlations in covalent semiconductors

Publisher Website
Google Scholar
Abstract
Displacement-displacement correlation functions as well as vibrational amplitudes and Debye temperatures were calculated for covalent semiconductors using the adiabatic bond charge model. The results were compared with the shell model and heat capacity as well as X-ray and Mossbauer data. Radial and transverse correlation were computed. Good agreement was found with recent EXAFS results. Values for the mean square dynamic deformations of the bond length and bond angles are presented and the dynamical disorder of crystalline germanium is compared with the static disorder of amorphous germanium.