title: Study by EXAFS of the local structure around Si on silicene deposited on Ag(1 1 0) and Ag(1 1 1) surfaces.
abstract: The local structure around the silicon atoms of silicene deposited onto Ag(1 1 0) and Ag(1 1 1) has been determined by extended x-ray absorption fine structure spectroscopy at the silicon K-edge. This study shows that silicon atoms are not in a flat honeycomb network locally buckled, but that this structure mimics the double Si(1 1 1)-plane of crystalline silicon with almost the same first and second interatomic distances (2.35 and 3.83 Å) on a regularly buckled geometry. Moreover the results evidence silver atoms at a well-defined distance from the silicon ones, a signature for an interaction between the silicene sheet and silver atoms released from the substrate.
authors.affiliation: Synchrotron SOLEIL BP48, l'Orme des Merisiers, 91192 Gif s/Yvette, France.
authors.forename: P
authors.initials: P
authors.lastname: Lagarde
authors.forename: M
authors.initials: M
authors.lastname: Chorro
authors.forename: D
authors.initials: D
authors.lastname: Roy
authors.forename: N
authors.initials: N
authors.lastname: Trcera