Non-conventional bell-shaped diffuse scattering in low-energy electron diffraction from high- quality epitaxial 2D-materials (CROSBI ID 298830)
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Podaci o odgovornosti
Omambac, K. ; Kriegel, M. ; Brand, C. ; Finke, B. ; Kremeyer, L. ; Hattab, H. ; Janoschka, D. ; Dreher, P. ; Meyer zu Heringdorf, F.-J. ; Momeni Pakdehi, D. ; Pierz, K. ; Schumacher, H. W. ; Petrović, M. ; van Houselt, A. ; Poelsema, B. ; Tringides, M. C. ; Horn-von Hoegen, M.
engleski
Non-conventional bell-shaped diffuse scattering in low-energy electron diffraction from high- quality epitaxial 2D-materials
A broad, bell-shaped intensity component is observed in low-energy electron diffraction from high-quality epitaxial 2D-systems. Three 2D- systems, graphene on Ir(111), graphene on SiC(0001), and hexagonal boron nitride on Ir(111), have been prepared in situ under ultra- high vacuum conditions. In all three systems— independent of substrate material—similar strong diffuse intensity is observed, exhibiting a width as large as 50% of the Brillouin zone and an integrated intensity more than 10 times the intensity of the Bragg spots. The presented experimental results provide evidence for a common origin of such diffuse diffraction intensity in different atomically thin 2D- materials.
graphene ; hexagonal boron nitride ; electron diffraction ; bell-shaped component
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