The article disagrees with itself:
“undergo periodic motion even without external energy, defying the traditional laws of thermodynamics that govern equilibrium in most systems.”
They added external energy:
“by shining light on the crystal,”
I’m having trouble distinguishing this from a bell after you hit it with a hammer, say.
I noticed all the inconsistencies in the article too as well as drawing comparisons calling both electrons and nuclei both particles. The writer is not a science guy.
The concept and results are cool though and seem to make sense.