Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth

Abstract To clarify whether a surface can be rough with faceted macrosteps that maintain their shape on the surface, crystal surface roughness is studied by a Monte Carlo method for a nucleation-limited crystal-growth process. As a surface model, the restricted solid-on-solid (RSOS) model with point...

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Auteur principal:	Noriko Akutsu
Format:	article
Langue:	EN
Publié:	Nature Portfolio 2021
Sujets:	Medicine R Science Q
Accès en ligne:	https://doaj.org/article/63bcfb47f690406f8d9fa4212d94c04c
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spelling	oai:doaj.org-article:63bcfb47f690406f8d9fa4212d94c04c2021-12-02T14:11:31ZFaceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth10.1038/s41598-021-83227-82045-2322https://doaj.org/article/63bcfb47f690406f8d9fa4212d94c04c2021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-83227-8https://doaj.org/toc/2045-2322Abstract To clarify whether a surface can be rough with faceted macrosteps that maintain their shape on the surface, crystal surface roughness is studied by a Monte Carlo method for a nucleation-limited crystal-growth process. As a surface model, the restricted solid-on-solid (RSOS) model with point-contact-type step–step attraction (p-RSOS model) is adopted. At equilibrium and at sufficiently low temperatures, the vicinal surface of the p-RSOS model consists of faceted macrosteps with (111) side surfaces and smooth terraces with (001) surfaces (the step-faceting zone). We found that a surface with faceted macrosteps has an approximately self-affine-rough structure on a ‘faceted-rough surface’; the surface width is strongly divergent at the step-disassembling point, which is a characteristic driving force for crystal growth. A ‘faceted-rough surface’ is realized in the region between the step-disassembling point and a crossover point where the single nucleation growth changes to poly-nucleation growth.Noriko AkutsuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Noriko Akutsu Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
description	Abstract To clarify whether a surface can be rough with faceted macrosteps that maintain their shape on the surface, crystal surface roughness is studied by a Monte Carlo method for a nucleation-limited crystal-growth process. As a surface model, the restricted solid-on-solid (RSOS) model with point-contact-type step–step attraction (p-RSOS model) is adopted. At equilibrium and at sufficiently low temperatures, the vicinal surface of the p-RSOS model consists of faceted macrosteps with (111) side surfaces and smooth terraces with (001) surfaces (the step-faceting zone). We found that a surface with faceted macrosteps has an approximately self-affine-rough structure on a ‘faceted-rough surface’; the surface width is strongly divergent at the step-disassembling point, which is a characteristic driving force for crystal growth. A ‘faceted-rough surface’ is realized in the region between the step-disassembling point and a crossover point where the single nucleation growth changes to poly-nucleation growth.
format	article
author	Noriko Akutsu
author_facet	Noriko Akutsu
author_sort	Noriko Akutsu
title	Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
title_short	Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
title_full	Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
title_fullStr	Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
title_full_unstemmed	Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
title_sort	faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/63bcfb47f690406f8d9fa4212d94c04c
work_keys_str_mv	AT norikoakutsu facetedroughsurfacewithdisassemblingofmacrostepsinnucleationlimitedcrystalgrowth
_version_	1718391845428396032

Faceted-rough surface with disassembling of macrosteps in nucleation-limited crystal growth

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