2017/09/18 by W. Wang, Weimin Wang, R. I. G. Uhrberg · 41 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemical physics #Chemistry #Computational chemistry #Condensed matter physics #Crystallography #Density functional theory #Diffraction #Electron diffraction #Germanene #Germanium #Graphene #Graphene research and applications #Layer (electronics) #Low-energy electron diffraction #Materials science #Nanotechnology #Nuclear magnetic resonance #Optics #Optoelectronics #Physics #Quantum and electron transport phenomena #Scanning tunneling microscope #Silicene #Silicon #Substrate (aquarium) #Surface and Thin Film Phenomena #X-ray photoelectron spectroscopy #cond-mat.mtrl-sci
paper · pdf · doi:10.3762/bjnano.8.195
published in Beilstein Journal of Nanotechnology 8, 1946-1951 (Beilstein Institute for the Advancement of Chemical Sciences) · 8 pages, 4 figures, 1 support information
openalex publication_date 2017/09/18 · arxiv created 2017/12/07 · arxiv updated 2017/12/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We report a study of structural and electronic properties of a germanium layer on Al(111) using scanning tunneling microscopy (STM), low energy electron diffraction and core-level photoelectron spectroscopy. Experimental results show that a germanium layer can be formed at a relatively high substrate temperature showing either (3×3) or (√7×√7)R±19.1° reconstructions. First-principles calculations based on density functional theory suggest an atomic model consisting of a strongly buckled (2×2) germanene layer, which is stable in two different orientations on Al(111). Simulated STM of both orientations fit nicely with experimental STM images and the Ge 3d core-level data decomposed into four components is consistent with the suggested model.