Browsing by Author "Bedurftig, K."

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  • Vibrational states of H monolayer on the Pt(111) surface
    (2003) Badescu, S.C.; Jacobi, K.; Wang, Yuemin; Bedurftig, K.; Ertl, G.; Salo, P.; Ala-Nissila, T.; Ying, S.C.
     A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
    We present high-resolution electron energy-loss data and theoretical modeling for the vibrational properties of an atomic monolayer of H (D) on the Pt(111) surface. Experimentally we find three loss peaks, in contrast with two peaks visible in the low-coverage case. A three-dimensional adiabatic potential-energy surface at full coverage of hydrogen is obtained through first-principles calculations. When the zero-point energy effects are included, the minimum energy adsorption site is found to be the fcc site just as in the low-coverage case. Vibrational band states for motion in this potential-energy surface are computed and the excited states associated with the observed loss peaks identified.