CRYSTAL-STRUCTURE OF SILVER CLUSTERS FORMED ON A SI(100)-2X1 SURFACE

The crystal structure of silver clusters formed on the surface of a Si (100)-2 X 1 single crystal by annealing of a thin Ag film deposited on a slightly heated crystal was studied by diffraction of quasielastica lly scattered medium-energy electrons. Simulation of the diffraction p attern obtained at 2 keV showed that the silver islands formed on sili con have an ordered structure corresponding to bulk silver and a fixed orientation Ag(100) parallel to Si(100) and [100](Ag) parallel to [10 0](Si) relative to the substrate. (C) 1998 American Institute of Physi cs. [S1063-7850(98)00804-0].