On the diffraction pattern of bundled rare-earth silicide nanowires on Si(001)
Autor(en): | Timmer, F. Bahlmann, J. Wollschlaeger, J. |
Stichwörter: | (SPA-)LEED; binary surface technique; DEFECTS; kinematic theory of diffraction; LEED; periodic domain boundaries; Physics; Physics, Condensed Matter; silicide nanowires; STM; SURFACES | Erscheinungsdatum: | 2017 | Herausgeber: | IOP PUBLISHING LTD | Journal: | JOURNAL OF PHYSICS-CONDENSED MATTER | Volumen: | 29 | Ausgabe: | 43 | Zusammenfassung: | Motivated by the complex diffraction pattern observed for bundled rare-earth silicide nanowires on the Si(0 0 1) surface, we investigate the influence of the width and the spacing distribution of the nanowires on the diffraction pattern. The diffraction pattern of the bundled rare-earth silicide nanowires is analyzed by the binary surface technique applying a kinematic approach to diffraction. Assuming a categorical distribution for the (individual) nanowire size and a Poisson distribution for the size of the spacing between adjacent nanowire-bundles, we are able to determine the parameters of these distributions and derive an expression for the distribution of the nanowire-bundle size. Additionally, the comparison of our simulations to the experimental diffraction pattern reveal that a (1 x 1)-periodicity on top of the nanowires has to be assumed for a good match. |
ISSN: | 09538984 | DOI: | 10.1088/1361-648X/aa8845 |
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geprüft am 01.06.2024