Question

How are phonons created?

Answer 1

Phonon: phonon can be defined as a discrete unit of vibrational mechanical energy, the phonons exist with a discrete amount of energy given by E=$♄$

• Phonon is the quantum energy of the lattice vibration.
• Phonon is a mode of oscillation that occurs in lattice structures.
• Phonons are a way of describing vibrational degrees of freedom in periodic structures (lattices).
• Vibrational motions can be modeled as harmonic oscillators, so they can be quantified in roughly the same way.
• The result of "quantization" (among other results) is the appearance of a "quanta" of oscillations called phonons.