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High-resolution Si2p core-level and low-energy electron diffraction studies of the Ca/Si(1 1 1)-(3 × 2) surface
Graduate School of Advanced Integration Science, Chiba University, Chiba 263-8522, Japen.
Department of Physics, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi, Yt- och Halvledarfysik.
Linköpings universitet, Tekniska högskolan. Linköpings universitet, Institutionen för fysik, kemi och biologi, Yt- och Halvledarfysik.
2003 (engelsk)Inngår i: Surface Science, ISSN 0039-6028, E-ISSN 1879-2758, Vol. 532-535, s. 628-632Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We have investigated the surface structure of the Ca/Si(1 1 1)-(3 × 2) surface using low-energy electron diffraction (LEED) and high-resolution core-level photoelectron spectroscopy. Weak ×2 streaks were observed in LEED at 300 K. After cooling the sample to 100 K, ×2 spots, which originate from both (3 × 2) and c(6 × 2) periodicities, appeared. By considering the energy shift and intensity of each surface component observed in the Si2p core-level spectra, we conclude that the structure of the (3 × 2) surface is basically the same as that of the honeycomb-chain-channel model with a Ca coverage of 1/6 ML. Further, we propose that the weak ×2 streaks at 300 K result from thermally induced disorder. © 2003 Elsevier Science B.V. All rights reserved.

sted, utgiver, år, opplag, sider
2003. Vol. 532-535, s. 628-632
Emneord [en]
Low energy electron diffraction (LEED), Photoelectron spectroscopy, Semiconducting surfaces, Silicon, Surface structure, morphology, roughness, and topography
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Identifikatorer
URN: urn:nbn:se:liu:diva-46595DOI: 10.1016/S0039-6028(03)00188-2OAI: oai:DiVA.org:liu-46595DiVA, id: diva2:267491
Tilgjengelig fra: 2009-10-11 Laget: 2009-10-11 Sist oppdatert: 2017-12-13

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