Effect of flexural rigidity of layers on dynamic characteristics of layered crystals with a complex lattice
Е. С. СыркинPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovС. Б. ФеодосьевPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, KharkovO. Ya. ShamfarovaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR, Kharkov
ABI
Аннотация
The evolution of dispersion relations and phonon densities of layered crystals with a complex lattice involving a change in the flexural rigidity of the layers (noncentral interaction between atoms from the same layer) is analyzed. It is found that the evolution is accompanied by a change in localized vibrations of the “gap type,” which are due to the presence of impurity atoms in such systems.
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