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Self-organized ordering of nanostructures produced by ion-beam sputtering

M. Castro, R. Cuerno, L. Vázquez, R. Gago

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.

Keywords: aeolian sand ripples, surfaces, instabilities, evolution, dynamics, erosion, model

Physical Review Letters. Volume: 94 Issue: 1 Pages: 016102.1-016102.4

JCR Impact Factor and Scopus quartile: 7.489 (2005); 8.839 - Q1 (2017).

DOI reference: DOI icon 10.1103/PhysRevLett.94.016102    

Published on paper: January 2005.

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