Phonon thermal conductivity properties in moiré superlattice systems

Abstract

Recently, moiré superlattice systems, which are formed when atomically thin layered materials are stacked with an arbitral angle, have attracted considerable attention because of their unique physical properties. On the other hand, there are still several unresolved issues concerning their phonon and thermophysical properties. In this paper, we introduce a thermal conductivity measurement method depending on the stacking angle of a suspended moiré superlattice system by using Raman spectroscopy.