This system is very cold, at a temperature of 3K (=-270°C=-454°F). The atoms are in a crystal, that will help to keep them in one place. In the brain, the atoms are hot, moving and colliding.

Also, a brain has approximately 10^26 atoms, a single neuron has something like 10^17 atoms, a single chromosome has something like 10^10 atoms. They have only 10^7 atoms.