This renders a stringent comparison between model structures and measurements almost impossible. Such INS experiments for quasicrystals show smooth DOS functions while simulations indicate much more structure. The studies were made at the Nuclear Resonance Beamline ID18 where a high-resolution monochromator is available with 0.8 meV resolution.
Solid lines are to guide the eye.
The surprising result is the sharp single maximum in the iron-partial DOS contrary to the INS result. All three partial-functions are very different in structure, showing the intricacy of the lattice dynamics in this quasicrystal. It is already clear that the vibrational structure depends sensitively on the lattice position as well as the atomic species, making such results invaluable in testing model structures.