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Oier Bikondoa; Dina Carbone; Virginie Chamard; Till Hartmut Metzger (2013)
Publisher: Nature Publishing Group
Journal: Scientific Reports
Languages: English
Types: Article
Subjects: QC, [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic, [PHYS.PHYS.PHYS-OPTICS] Physics [physics]/Physics [physics]/Optics [physics.optics], [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics], [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing, [SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing, Article
International audience; Instabilities caused during the erosion of a surface by an ion beam can lead to the formation of self-organized patterns of nanostructures. Understanding the self-organization process requires not only the in-situ characterization of ensemble averaged properties but also probing the dynamics. This can be done with the use of coherent X-rays and analyzing the temporal correlations of the scattered intensity. Here, we show that the dynamics of a semiconductor surface nanopatterned by normal incidence ion beam sputtering are age-dependent and slow down with sputtering time. This work provides a novel insight into the erosion dynamics and opens new perspectives for the understanding of self-organization mechanisms.

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