About cookies on this site Our websites require some cookies to function properly (required). In addition, other cookies may be used with your consent to analyze site usage, improve the user experience and for advertising. For more information, please review your options. By visiting our website, you agree to our processing of information as described in IBM’sprivacy statement. To provide a smooth navigation, your cookie preferences will be shared across the IBM web domains listed here.
Paper
Low-energy-electron-diffraction study of multilayer relaxation on a Pb{311} surface
Abstract
Multilayer relaxation on clean Pd{311} has been determined by analysis of low-energy-electron-diffraction intensity data collected from a sample at -140° C. The results, in terms of changes dik from the bulk value dbulk (1.485) of the interlayer spacing dik between layers i and k, are as follows: d12=(-0.210.03) or (-14.12.0)% of dbulk, d23=(-0.030.03) or (-2.02.0)% of dbulk, d34=(-0.010.05) or (-0.73.4)% of dbulk, and d45=(0.080.05) or (+5.44.0)% of dbulk. Since the {311} surface has only one mirror line, parallel relaxations along the mirror line (the x direction) are possible and indeed found. The changes along x are s12x=(0.080.05) or (+3.01.9)% of the bulk value 2.626, and s23x=(-0.050.05) or (-1.91.9)% of the bulk value. The contraction of d12 is comparable in magnitude to that found on {311} surfaces of other face-centered-cubic metals, in contrast to the results obtained earlier on Pb{110}, Pb{001}, and Pb{111}. However, as on these low-index surfaces, the relaxations extend more deeply into the bulk than on surfaces of other fcc metals. © 1991 The American Physical Society.