All Problems

Molecules and Crystals

Problem 6.196

Evaluate the maximum values of energy and momentum of a phonon (acoustie quantum) in copper whose Debye temperature is equal to \(330 \mathrm{~K}\).

Reveal Answer
 6.196. ℏωmax⁡=28meV,ℏkmax⁡∼∼10−19 g⋅cm/s\begin{array}{c} \text { 6.196. } \hbar \omega_{\max }=28 \mathrm{meV}, \quad \hbar k_{\max } \sim \\ \sim 10^{-19} \mathrm{~g} \cdot \mathrm{cm} / \mathrm{s} \end{array}
Prev
Next