Critical scattering at the order-disorder phase transition of Si(111)-√3×√3R30°-Au surface: A phase transition with particle exchange

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dc.identifier.uri http://dx.doi.org/10.15488/2790
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/2816
dc.contributor.author Nakajima, Y.
dc.contributor.author Voges, C.
dc.contributor.author Nagao, T.
dc.contributor.author Hasegawa, S.
dc.contributor.author Klos, G.
dc.contributor.author Pfnür, Herbert
dc.date.accessioned 2018-02-19T14:57:16Z
dc.date.available 2018-02-19T14:57:16Z
dc.date.issued 1997
dc.identifier.citation Nakajima, Y.; Voges, C.; Nagai, T.; Hasegawa, S.; Klos, G.; Pfnür, H.: Critical scattering at the order-disorder phase transition of Si(111)-√3×√3R30°-Au surface: A phase transition with particle exchange. In: Physical Review B 55 (1997), Nr. 13, 8129. DOI: https://doi.org/10.1103/PhysRevB.55.8129
dc.description.abstract The Si(111)-√3×√3-Au phase, which coexists with three-dimensional islands of excess Au at coverages above 1 monolayer and at temperatures above 700 K, is shown to undergo a temperature driven order-disorder phase transition at 1057 K. The islands act as a reservoir of Au atoms and adjust the chemical potential for the two-dimensional layer during the transition. Due to this particle exchange, the phase transition within the √3×√3R30°-Au has been observed for a chemisorbed layer which is not under the usual constraint of constant coverage, but controlled by the chemical potential. We quantitatively analyzed the critical scattering and experimentally determined its critical exponents Β, γ, and ν by high-resolution low-energy electron diffraction. Their values are in good agreement with the expected values of the three-state Potts model, which shows that the transition is continuous without any finite-size effects detectable. eng
dc.language.iso eng
dc.publisher College Park, MD : American Physical Society
dc.relation.ispartofseries Physical Review B 55 (1997), Nr. 13
dc.rights Es gilt deutsches Urheberrecht. Das Dokument darf zum eigenen Gebrauch kostenfrei genutzt, aber nicht im Internet bereitgestellt oder an Außenstehende weitergegeben werden.
dc.subject phase transition eng
dc.subject Au atoms eng
dc.subject Potts model eng
dc.subject.ddc 530 | Physik ger
dc.title Critical scattering at the order-disorder phase transition of Si(111)-√3×√3R30°-Au surface: A phase transition with particle exchange eng
dc.type article
dc.type Text
dc.relation.issn 01631829
dc.relation.doi https://doi.org/10.1103/PhysRevB.55.8129
dc.bibliographicCitation.issue 13
dc.bibliographicCitation.volume 55
dc.bibliographicCitation.firstPage 8129
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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