Properties of the phonon spectra in the anisotropic wurtzite nanostructures

摘要

The theory of phonon spectra in the three-layer anisotropic wurtzite-based nano-heretostructures with binary- and ternary compounds is developed using the dielectric continuum Loudon's model. The energy spectra of confined, interface, half-space, and propagating phonons are obtained and analyzed. The ranges where the certain phonon modes exist are established depending on the concentration of Al in ternary compound AlGaN of three-layered nano-heterostructure (AlN/GaN/AlN/AlGaN/AlN).