Epitaxial growth of single-crystalC60on mica by helium-atom scattering

We report on a helium-atom-scattering study of the growth, structure, and surface dynamics of a very thin film of ${\mathrm{C}}_{60}$ sublimed in ultrahigh vacuum onto a freshly cleaved mica substrate. The resulting diffraction pattern showed that the ${\mathrm{C}}_{60}$ forms a hexagonal crystal layer that is in registry with the mica substrate and at a spacing of 10.4 Å. The dispersion results showed two Einstein modes.