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 plus/minus 10 meV. A dynamical LEED study of the c(2x8) higher-order commensurate structure at 25 K indicates that rows of krypton atoms are localized on top of the copper substrate rows. The krypton rows are situated such that they have the lowest-coordinated position along the rows. The overlayer-substrate spacing is 3.36 plus/minus 0.07 A and the top two interlayer spacings of the substrate are 1.18 plus/minus 0.04 A and 1.31 plus/minus 0.02 A, respectively.