Abstract
High-energy (Rutherford) ion-scattering, in conjuncion with channeling techniques, provides a simple and direct method of measuring surface relaxation. Its sensitivity is comparable to LEED, but it avoids many of the interpretative difficulties. We report an experimental study of the relaxation of a (111) platinum surface using MeV He + backscattering. An outward relaxation of (0.31 ± 0.06) Å was obtained for surfaces with monolayer coverages of adsorbed oxygen.
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