Low-temperature specific heat and thermal conductivity of glasses

Abstract

The soft potential model (an extension of the tunneling model to include soft localized vibrations) is shown to describe the anomalous features of the specific heat ${\mathit{C}}_{\mathit{P}}$ and the thermal conductivity of glasses over the entire low-temperature range, up to an including the peak in ${\mathit{C}}_{\mathit{P}}$/${\mathit{T}}^3$ and the second rise of the thermal conductivity above the plateau.