Abstract
An experimental investigation of oscillatory multilayer relaxation at the Ag(110) surface is presented. Measurements are performed using Rutherford backscattering of 50.6 and 97.6 keV protons in the double alignment scattering geometry (shadowing and blocking). A comparison of scattering data with Monte Carlo calculations shows that the distance d 12 between the first and second layer is smaller than the bulk interlayer distance by 9.5±2%, while the distance d 23 between the second and third layer is increased by 6.0±2.5%. The surface thermal vibration amplitude is enhanced with respect to the bulk value. In the first and second layers enhancements of 65% and 12% are observed, respectively. Experimental multilayer relaxation values are compared with results from LEED and with high-energy ion scattering data obtained by Kuk and Feldman in single-alignment scattering geometry.
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