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Dimer-T(3) reconstr...
Dimer-T(3) reconstruction of the Sm/Si(100)(2 x 3) surface studied by high-resolution photoelectron spectroscopy and density functional theory calculations
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Kuzmin, M. (author)
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- Punkkinen, Marko Patrick John (author)
- KTH,Materialvetenskap
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Laukkanen, P. (author)
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Lang, J. J. K. (author)
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Dahl, J. (author)
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Tuominen, M. (author)
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Tuominen, V. (author)
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- Adell, Johan (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Thiagarajan, Balasubramanian (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Vitos, Levente (author)
- Uppsala universitet,KTH,Tillämpad materialfysik,Materialteori
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Kokko, K. (author)
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(creator_code:org_t)
- 2011
- 2011
- English.
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In: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 84:24, s. 245322-
- Related links:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://lup.lub.lu.s...
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Abstract
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- Silicon dimer-containing reconstructions on Si(100) can be induced by submonolayer amounts of rare earth (RE) metals. The tilt of dimer bonds in such reconstructions can be controlled by the coverage and electronic properties of RE adsorbates. In this study, we have utilized improved high-resolution photoelectron spectroscopy with the synchrotron radiation and density functional theory (DFT) calculations to exploit the structural and electronic properties of the Sm/Si(100)(2 x 3) system. A careful analysis of photoelectron spectra, in combination with DFT calculations of surface core-level shifts for silicon atoms in energetically plausible structural models, has allowed us to establish the favorable atomic configuration of Sm/Si(100)(2 x 3) with a buckled Si dimer and to explain characteristic features of Si 2p line shape in detail. It is shown that the dimer buckling leads to a significant core-level binding-energy splitting of the first-layer Si atoms, affecting the lower-binding-energy region of Si 2p spectra drastically. An interpretation of the Si 2p line shape for RE/Si(100)(2 x 3) that is based on combined initial state and complete screening data is suggested. The mechanism underlying the buckling and symmetrization of silicon dimers in RE/Si(100) reconstructions is discussed.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Metallurgi och metalliska material (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Metallurgy and Metallic Materials (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Kuzmin, M.
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Punkkinen, Marko ...
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Laukkanen, P.
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Lang, J. J. K.
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Dahl, J.
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Tuominen, M.
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show more...
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Tuominen, V.
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Adell, Johan
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Thiagarajan, Bal ...
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Vitos, Levente
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Kokko, K.
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show less...
- About the subject
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Materials Engine ...
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and Metallurgy and M ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
- Articles in the publication
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Physical Review ...
- By the university
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Royal Institute of Technology
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Uppsala University
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Lund University