Scattering of thermal phonons by Li-O donors in Si

Abstract
The low-temperature thermal conductivity K of Si containing Li-O donors is presented for the first time and is compared to that of Si with almost the same concentration of Li donors. The role of oxygen concerning the maximum of K is discussed. The strength of phonon scattering by Li-O-donor electrons is calculated and satisfactorily explains the temperature dependence of K at lower temperatures.