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Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()

Controlling the surface structure on the atomic scale is a major difficulty for most transition metal oxides; this is especially true for the ternary perovskites. The influence of surface stoichiometry on the atomic structure of the SrTiO(3)(001) surface was examined with scanning tunneling microsco...

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Autores principales: Gerhold, Stefan, Wang, Zhiming, Schmid, Michael, Diebold, Ulrike
Formato: Online Artículo Texto
Lenguaje:English
Publicado: North-Holland Pub. Co 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990415/
https://www.ncbi.nlm.nih.gov/pubmed/24748691
http://dx.doi.org/10.1016/j.susc.2013.10.015
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author Gerhold, Stefan
Wang, Zhiming
Schmid, Michael
Diebold, Ulrike
author_facet Gerhold, Stefan
Wang, Zhiming
Schmid, Michael
Diebold, Ulrike
author_sort Gerhold, Stefan
collection PubMed
description Controlling the surface structure on the atomic scale is a major difficulty for most transition metal oxides; this is especially true for the ternary perovskites. The influence of surface stoichiometry on the atomic structure of the SrTiO(3)(001) surface was examined with scanning tunneling microscopy, low-energy electron diffraction, low-energy He(+) ion scattering (LEIS), and X-ray photoelectron spectroscopy (XPS). Vapor deposition of 0.8 monolayer (ML) strontium and 0.3 ML titanium, with subsequent annealing to 850 °C in 4 × 10(− 6) mbar O(2), reversibly switches the surface between c(4 × 2) and (2 × 2) reconstructions, respectively. The combination of LEIS and XPS shows a different stoichiometry that is confined to the top layer. Geometric models for these reconstructions need to take into account these different surface compositions.
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spelling pubmed-39904152014-04-18 Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)() Gerhold, Stefan Wang, Zhiming Schmid, Michael Diebold, Ulrike Surf Sci Surface Science Letters Controlling the surface structure on the atomic scale is a major difficulty for most transition metal oxides; this is especially true for the ternary perovskites. The influence of surface stoichiometry on the atomic structure of the SrTiO(3)(001) surface was examined with scanning tunneling microscopy, low-energy electron diffraction, low-energy He(+) ion scattering (LEIS), and X-ray photoelectron spectroscopy (XPS). Vapor deposition of 0.8 monolayer (ML) strontium and 0.3 ML titanium, with subsequent annealing to 850 °C in 4 × 10(− 6) mbar O(2), reversibly switches the surface between c(4 × 2) and (2 × 2) reconstructions, respectively. The combination of LEIS and XPS shows a different stoichiometry that is confined to the top layer. Geometric models for these reconstructions need to take into account these different surface compositions. North-Holland Pub. Co 2014-03 /pmc/articles/PMC3990415/ /pubmed/24748691 http://dx.doi.org/10.1016/j.susc.2013.10.015 Text en © 2014 Elsevier B.V. https://creativecommons.org/licenses/by/3.0/This is an open access article under the CC BY license (https://creativecommons.org/licenses/by/3.0/).
spellingShingle Surface Science Letters
Gerhold, Stefan
Wang, Zhiming
Schmid, Michael
Diebold, Ulrike
Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title_full Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title_fullStr Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title_full_unstemmed Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title_short Stoichiometry-driven switching between surface reconstructions on SrTiO(3)(001)()
title_sort stoichiometry-driven switching between surface reconstructions on srtio(3)(001)()
topic Surface Science Letters
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3990415/
https://www.ncbi.nlm.nih.gov/pubmed/24748691
http://dx.doi.org/10.1016/j.susc.2013.10.015
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