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Medium-energy ion scattering structural analyses of the surfaces of metals

Thesis/Dissertation ·
OSTI ID:6490066
Medium energy ion scattering (MEIS) with channeling and blocking is applied as an experimental tool for exploring the structure of surfaces. Several metal surfaces are examined, leading to models of relaxation and reconstruction on an atomic scale. Results for Cu(110) and Au(110) demonstrate that structure determinations using MEIS are in agreement with results derived using other techniques. Findings suggest that the multilayer relaxation of a reconstructed surface follows dynamics similar to those of a non-reconstructed surface. Results are also presented on the effect of adsorbed species on metal surfaces, with an emphasis on cases where the adsorbate alters the periodicity of the surface. The structure of clean and oxygen chemisorbed Ir(110) is investigated, along with the effect of several adsorbates on Cu(110).
Research Organization:
Pennsylvania Univ., Philadelphia (USA)
OSTI ID:
6490066
Country of Publication:
United States
Language:
English