Lattice dynamics of a partially disordered crystal: A simple model
- 15 July 1978
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 18 (2), 667-673
- https://doi.org/10.1103/physrevb.18.667
Abstract
A general method for the study of the lattice dynamics of a partially disordered crystal is worked out on a model Hamiltonian. It describes a crystal of diatomic molecules the rotational motions of which are strongly coupled to the lattice vibrations. Expressions are derived for the inverse of the static displacement-displacement susceptibility matrix, the elastic constants, and the atomic-density probability distribution of each molecule.Keywords
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