2013/02/14 by Mohamed Rachid Tchalal, Hanna Enriquez, Tchalal, Mohamed Rachid +24
Chemistry · Engineering · Physics and Astronomy · #Chemistry #Crystallography #Diffraction #Electron diffraction #FOS: Physical sciences #Low-energy electron diffraction #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci) #Materials science #Monolayer #Nanotechnology #Nanowire Synthesis and Applications #Optics #Optoelectronics #Physics #Scanning tunneling microscope #Silicon #Superstructure #Surface and Thin Film Phenomena #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1302.3391
Under publication in Applied Physics Letters
arxiv created 2013/02/14 · openalex publication_date 2013/02/14 · arxiv updated 2013/02/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report results on the self-assembly of silicon nanoribbons on the (2x1) reconstructed Au(110) surface under ultra-high vacuum conditions. Upon adsorption of 0.2 monolayer (ML) of silicon the (2x1) reconstruction of Au(110) is replaced by an ordered surface alloy. Above this coverage a new superstructure is revealed by low electron energy diffraction (LEED) which becomes sharper at 0.3 Si ML. This superstructure corresponds to Si nanoribbons all oriented along the [-110] direction as revealed by LEED and scanning tunneling microscopy (STM). STM and high-resolution photoemission spectroscopy indicate that the nanoribbons are flat and predominantly 1.6 nm wide. In addition the silicon atoms show signatures of two chemical environments corresponding to the edge and center of the ribbons.