Specific Heat of Germanium and Silicon at Low Temperatures

Abstract

The specific heats of several samples of silicon have been measured between 1.2°K and 4.2°K. The Debye characteristic temperature ${\theta }_0$ at 0°K is estimated to be 636°K, a value slightly lower than previously reported. Measurements of germanium between 0.5°K and 4.2°K yield ${\theta }_0=363\mathrm{}°$K, in very good agreement with older results.