Atomic dynamics of semiconductor-metal nano-interface

The propagation of acoustic waves through interface of two crystals is studied on microscopic level using the discrete lattice model. The phonon transmission through the intercalated layer between two semi-infinite lattices is considered. The general expressions for energy fluxes and impedances are proposed. The resonance transmission of phonons through the interface of the 3D pressure made Si-Cu point contact was studied using the discrete model of the crystal lattice. We show that anomalous behavior of the reduced heat flux in the temperature range 1 K < T < 25 K are induced by the resonance transport of phonons through the layer of impurity atoms. The data obtained are in a good agreement with the experimental results.