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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