Universität zu Köln

Vivo, Edoardo, Nicoli, Matteo, Engler, Martin ORCID: 0000-0002-6593-0677, Michely, Thomas, Vazquez, Luis and Cuerno, Rodolfo ORCID: 0000-0002-3563-771X (2012). Strong anisotropy in surface kinetic roughening: Analysis and experiments. Phys. Rev. B, 86 (24). COLLEGE PK: AMER PHYSICAL SOC. ISSN 2469-9969

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Abstract

We report an experimental assessment of surface kinetic roughening properties that are anisotropic in space. Working for two specific instances of silicon surfaces irradiated by ion-beam sputtering under diverse conditions (with and without concurrent metallic impurity codeposition), we verify the predictions and consistency of a recently proposed scaling Ansatz for surface observables like the two-dimensional (2D) height power spectral density (PSD). In contrast with other formulations, this ansatz is naturally tailored to the study of two-dimensional surfaces, and allows us to readily explore the implications of anisotropic scaling for other observables, such as real-space correlation functions and PSD functions for 1D profiles of the surface. Our results confirm that there are indeed actual experimental systems whose kinetic roughening is strongly anisotropic, as consistently described by this scaling analysis. In the light of our work, some types of experimental measurements are seen to be more affected by issues like finite space resolution effects, etc. that may hinder a clear-cut assessment of strongly anisotropic scaling in the present and other practical contexts. DOI: 10.1103/PhysRevB.86.245427

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Vivo, Edoardo UNSPECIFIED UNSPECIFIED UNSPECIFIED Nicoli, Matteo UNSPECIFIED UNSPECIFIED UNSPECIFIED Engler, Martin UNSPECIFIED orcid.org/0000-0002-6593-0677 UNSPECIFIED Michely, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Vazquez, Luis UNSPECIFIED UNSPECIFIED UNSPECIFIED Cuerno, Rodolfo UNSPECIFIED orcid.org/0000-0002-3563-771X UNSPECIFIED
URN:	urn:nbn:de:hbz:38-476488
DOI:	10.1103/PhysRevB.86.245427
Journal or Publication Title:	Phys. Rev. B
Volume:	86
Number:	24
Date:	2012
Publisher:	AMER PHYSICAL SOC
Place of Publication:	COLLEGE PK
ISSN:	2469-9969
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language GROWTH Multiple languages Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/47648