Low-energy electron diffraction study of krypton on Cu(110)

Low-energy electron diffraction (LEED) was used to study the adsorption of krypton on Cu(110). Adsorption isobars indicate that the isosteric heat of adsorption for one-half monolayer is 114+/-10 meV. A dynamical LEED study o f the c(2 x 8) higher-order commensurate structure at 25 K indicates that r ows of krypton atoms are localized on top of the copper substrate rows. The krypton rows are situated such that they have the lowest-coordinated posit ion along the rows. The overlayer-substrate spacing is 3.36+/-0.07 Angstrom and the top two interlayer spacings of the substrate are 1.18+/-0.04 Angst rom and 1.31+/-0.02 Angstrom, respectively. (C) 2000 Elsevier Science B.V. All rights reserved.