Self-organized ordering of nanostructures produced by ion-beam sputtering.
We study the self-organized ordering of nanostructures produced by ion-beam sputtering of targets amorphizing under irradiation. By introducing a model akin to models of pattern formation in aeolian sand dunes, we extend consistently the current continuum theory of erosion by IBS. We obtain new nonlinear effects responsible for the in-plane ordering of the structures, whose strength correlates with the degree of ordering found in experiments. Our results highlight the importance of redeposition and surface viscous flow to this nanopattern formation process.
Castro
Mario
M
Grupo Interdisciplinar de Sistemas Complejos and Grupo de Dinámica No Lineal, Escuela Técnica Superior de Ingeniería, Universidad Pontificia Comillas, E-28015 Madrid, Spain.
Cuerno
Rodolfo
R
Vázquez
Luis
L
Gago
Raúl
R