Lattice-dynamical calculation of phonon scattering at a disordered interface

Fagas, G. and Kozorezov, A. G. and Lambert, C. J. and Wigmore, J. K. (1999) Lattice-dynamical calculation of phonon scattering at a disordered interface. Physica B: Condensed Matter, 263-26 (1). pp. 739-741. ISSN 0921-4526

Abstract

For an FCC crystal with central force interactions and separately for a scalar model on a square lattice, we compute exactly the phonon transmission coefficient T(omega) through a disordered planar interface between two identical semiinfinite leads. At high frequencies T(omega) exhibits a strong frequency dependence which is determined by the correlation length of the disorder.