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de Gennes Narrowing and Relationship between Structure and Dynamics in Self-Organized Ion-Beam Nanopatterning by Peco Myint; Karl F. Ludwig; Lutz Wiegart; Yugang Zhang; Andrei Fluerasu; Xiaozhi Zhang; Randall L. Headrick is a Physics and Astronomy article available to read on EtoBox.

What is de Gennes Narrowing and Relationship between Structure and Dynamics in Self-Organized Ion-Beam Nanopatterning about?

Investigating the relationship between structure and dynamical processes is a central goal in condensed matter physics. Perhaps the most noted relationship between the two is the phenomenon of de Gennes narrowing, in which relaxation times in liquids are proportional to the scattering structure factor. Here, a similar relationship is discovered during the self-organized ion-beam nanopatterning of silicon using coherent x-ray scattering. However, in contrast to the exponential relaxation of fluctuations in classic de Gennes narrowing, the dynamic surface exhibits a wide range of behaviors as a function of the length scale, with a compressed exponential relaxation at lengths corresponding to the dominant structural motif-self-organized nanoscale ripples. These behaviors are reproduced in simulations of a nonlinear model describing the surface evolution. We suggest that the compressed exponential behavior observed here is due to the morphological persistence of the self-organized surface ripple patterns which form and evolve during ion-beam nanopatterning.

Who reads de Gennes Narrowing and Relationship between Structure and Dynamics in Self-Organized Ion-Beam Nanopatterning?

Author

Peco Myint; Karl F. Ludwig; Lutz Wiegart; Yugang Zhang; Andrei Fluerasu; Xiaozhi Zhang; Randall L. Headrick

Publisher

American Physical Society (APS)

Published

2021

Language

EN

Field

Physics and Astronomy (Physical Sciences)