Ageing dynamics of ion bombardment induced self-organization processes
Bikondoa , O.
Carbone , D.
Chamard , Virginie
Metzger , T.H.
- Publisher: Nature Publishing Group
(issn: 2045-2322, vol:
QC | [ SPI.OPTI ] Engineering Sciences [physics]/Optics / Photonic | [ PHYS.PHYS.PHYS-OPTICS ] Physics [physics]/Physics [physics]/Optics [physics.optics] | [ 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.