The scattering of acoustic waves on a two-dimensional defect in the bulk of a crystal is studied by the methods of lattice dynamics. As a model we choose two semi-infinite strongly anisotropic crystals, the interaction between which is different from that in the crystals themselves. For such a model we study effect of the resonance wave transmission through an impurity monolayer. This effect is caused by the weak link between the defect and the host lattice and cannot be described in the framework of the common elasticity theory as the displacements of the defect monolayer and neighbouring host lattice layers are essentially different. The effect of resonance wave transmission can be qualitatively demonstrated with a linear point impurity containing chain taken as an example.

• Косевич Арнольд Маркович (1928–2006) (фізико-математичні науки)
• Сиркін Євген Соломонович (фізико-математичні науки)

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