Normal Modes in a Periodic Monatomic Linear Chain

number of atoms

30

wave vector (k)

0.1

amplitude (ϵ)

0.2

t

0.

This Demonstration shows the normal modes in a monatomic periodic linear chain. You can vary the number of atoms, the wave vector

k

in the first Brillouin zone, and the amplitude of the oscillations. For small

k

, sound waves are produced. The stationary waves enable the Brillouin-zone boundaries to be mapped.