Фононный транспорт в кристаллических кремниевых квазиодномерных гетероструктурах с аморфной оболочкой

Abstract

Amorphization of the surface of crystalline quantum wires is modeled by stochastically varying the parameters of interatomic interactions. Thermal conductivity is calculated taking into account the phonon-phonon and phonon-surface scattering. Phonons, which penetrate amorphous coating with high atomic disorder, are strongly scattered there and completely removed from the heat transport. Calculations show an appreciable suppression of thermal conductivity in experimentally feasible structures.