Phonon Band Structure

This lecture covers the Phonon Band Structure, Phonon Density of States, and Phonon Modes of a Crystal in a 1D and 3D lattice. It explains the Schrodinger equation for material waves, the concept of crystal momentum, and the energy levels in periodic potentials. The lecture also delves into the Phonon Density of States in monoatomic and polyatomic lattices, the Debye model, and the phonon dispersion in artificial structures.