Non-conventional bell-shaped diffuse scattering in low-energy electron diffraction from high-quality epitaxial 2D-materials
| Autor: | Hans Werner Schumacher, M. Horn-von Hoegen, Karim M. Omambac, Pascal Dreher, Klaus Pierz, H. Hattab, M. Kriegel, Marin Petrović, C. Brand, B. Finke, F.-J. Meyer zu Heringdorf, A. van Houselt, D. Momeni Pakdehi, L. Kremeyer, Bene Poelsema, Michael C. Tringides, D. Janoschka |
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| Přispěvatelé: | MESA+ Institute, Physics of Interfaces and Nanomaterials |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Diffraction Materials science Physics and Astronomy (miscellaneous) Low-energy electron diffraction Graphene Ultra-high vacuum 22/2 OA procedure Bragg peak graphene hexagonal boron nitride electron diffraction bell-shaped component 02 engineering and technology Physik (inkl. Astronomie) 021001 nanoscience & nanotechnology Epitaxy 01 natural sciences Molecular physics law.invention Brillouin zone Electron diffraction law 0103 physical sciences 0210 nano-technology |
| Zdroj: | Applied physics letters, 118(24):241902. American Institute of Physics |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0051220 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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