How should I think about the concept of phonons?(adsbygoogle = window.adsbygoogle || []).push({});

As I understand it, it is a wave which propagates with a speed similar to sound and models the movement of atoms in crystals. However how many atoms per phonon? And isn't phonons meant to be analogous to photons which are single units hence one particle per phonon?

Or does the phonon is a wave travelling at a certain speed and frequency hence energy and all particles with that speed is represented by the phonon? Hence the solid is represented by phonons only. Which is usually less than the number of particles.

In this article they showed 6 waves with distinct k values. They represent 6 different phonons? Hence each phonon can be made up of many particles.

http://en.wikipedia.org/wiki/Phonons

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# Concept of phonons?

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