title: Surface atomic arrangement visualization via reference-atom-specific holography.
abstract: We demonstrate the direct reconstruction of 3D atomic images from measured low-energy electron diffraction (LEED) intensity spectra. A multiple-incident angle and multiple-energy integral are first applied to the spectra to obtain a map of interatomic vectors. From this map, a nonbulk interatomic vector is chosen that points to a desired reference atom. A second integral transformation, using the chosen interatomic vector as a filter, is applied to the LEED spectra to produce images of individual atoms in the vicinity of the selected reference atom. This two-step method overcomes the problem of multiple, nonequivalent reference atoms and is applicable to elemental or compound materials.
authors.affiliation: Department of Physics and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Hong Kong.
authors.forename: Huasheng
authors.initials: H
authors.lastname: Wu
authors.forename: Shihong
authors.initials: S
authors.lastname: Xu
authors.forename: Simon
authors.initials: S
authors.lastname: Ma
authors.forename: W P
authors.initials: WP
authors.lastname: Lau
authors.forename: M H
authors.initials: MH
authors.lastname: Xie
authors.forename: S Y
authors.initials: SY
authors.lastname: Tong