Theoretical and experimental study of the vibrational excitations in ethane monolayers adsorbed on graphite (0001) surfaces
作者： F. Y. Hansen , H. Taub
DOI: 10.1063/1.453011
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摘要: The collective vibrational excitations of two different crystalline monolayer phases ethane (C2H6) adsorbed on the graphite (0001) surface have been investigated theoretically and experimentally. studied are commensurate 7/8 ×4 structure in which molecules lie their side a herringbone arrangement × stand on‐end with C–C bond perpendicular to surface. Semiempirical atom–atom potentials used model intermolecular molecule–substrate interactions calculations lattice dynamics. observed inelastic neutron scattering spectra below 4.1 THz compared calculated one‐phonon incoherent cross sections. sections qualitatively reproduce rather enable an identification modes. Moreover, they suggest that important feature phase dyn...
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