Collective Excitations in Ethane Monolayers Adsorbed on Graphite (0001) Surfaces
Hansen, Flemming Y.
Reichel, D. G.
Danner, H. R.
Alldredge, G. P.
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Inelastic incoherent neutron spectra below 4.1 THz have been obtained for the √3×4 "herringbone" and √3×√3 "on-end" monolayer phases of ethane adsorbed on graphite basal planes. One-phonon cross sections calculated independently with empirical atom-atom potentials make possible identification of the collective vibrational modes observed and reproduce qualitatively the rather different spectra of the two phases.
Physics and Astronomy publications (MU)
Phys. Rev. Lett. 53, 572-575 (1984)