On the surface phonons due to oxygen adsorption on Ni (100) |
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| Authors: | G. Armand Y. Lejay |
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| Affiliation: | Centre d''Etudes Nucléaires de Saclay, Service de Physique Atomique, Section d''Etudes des Intéractions Gaz Solides, B.P. No. 2-91190, Gif-sur-Yvette, France |
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| Abstract: | Assuming that an oxygen adsorbed atom is linked to four Nickel atoms by central harmonic forces, the surface phonons energies are calculated in the case of P 2 × 2 and C 2 × 2 structures. The comparison to measured low-energy electron losses indicates that the Ni-O bond strength in the P 2 × 2 adsorbed structure is twice that of the C 2 × 2. This result gives some information concerning the potential shape near equilibrium position. |
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