High resolution imaging of superficial mosaicity in single crystals using grazing incidence fast atom diffraction
| Autor: | Philippe Roncin, A. Momeni, B. Lalmi, P. Soulisse, Hocine Khemliche |
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| Přispěvatelé: | Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
Diffraction
Surface (mathematics) Materials science atom scattering 02 engineering and technology Table (information) 01 natural sciences Mosaicity Optics mosaic structure 0103 physical sciences Atom General Materials Science Surface layer 010306 general physics business.industry 021001 nanoscience & nanotechnology Condensed Matter Physics Tilt (optics) particle-surface interactions Fast Atom Diffraction [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] 0210 nano-technology business Electronic density |
| Zdroj: | Journal of Physics: Condensed Matter Journal of Physics: Condensed Matter, IOP Publishing, 2012, 24 (44), pp.442002. ⟨10.1088/0953-8984/24/44/442002⟩ |
| ISSN: | 0953-8984 1361-648X |
| DOI: | 10.1088/0953-8984/24/44/442002⟩ |
| Popis: | International audience; A new table top technique is used to simultaneously analyze the local morphology of crystalline surfaces as well as the misalignment of large scale domains at the topmost surface layer. The approach is based on fast atom diffraction at grazing incidence (GIFAD); the diffraction pattern yields the structural characteristics and the topology of the surface electronic density with atomic resolution. If superficial mosaicity is present, diffraction patterns arising from each mosaic domain can be distinguished, providing high sensitivity to the properties of each of the domains. Taking NaCl(001) as an example, we observe a discrete tilt angle distribution of the mosaic domains following an arithmetic progression with a 0.025° ± 0.005° difference; a twist mosaic angle of 0.09° ± 0.01° is also observed. |
| Databáze: | OpenAIRE |
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