Direct Transform-Deconvolution Method for Surface-Structure Determination

Abstract
We describe direct method for surface-structure determination from low-energy electron-diffraction (LEED) intensities. Fourier transforms of LEED intensities are shown to contain convolution products of functions of the interatomic vectors with data truncation and potential windows. A deconvolution method and substrate-subtraction procedure is described, yielding an accurate structural determination of clean surfaces and overlayer systems. Applicability of the method to experimental data is demonstrated by using LEED intensities from A1(100)