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Surface phase diagram and temperature induced phase transitions of Sn/Cu(100)
- Martinez-Blanco, J (author)
- Joco, V (author)
- Segovia, P (author)
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- Michel, EG (author)
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- (creator_code:org_t)
- Elsevier BV, 2006
- 2006
- English.
- In: Proceedings of the Eight International Conference on Atomically Controlled Surfaces, Interfaces and Nanostructures and the Thirteenth International Congress on Thin Films - ACSIN8/ICTF13 (Applied Surface Science). - : Elsevier BV. - 0169-4332 .- 1873-5584. ; 252:15, s. 5331-5334
- Conference paper (peer-reviewed)
Abstract
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- Room temperature deposition of Sn on Cu(100) gives rise to a rich variety of surface reconstructions in the submonolayer coverage range. In this work, we report a detailed investigation on the phases appearing and their temperature stability range by using low-energy electron diffraction and surface X-ray diffraction. Previously reported reconstructions in the submonolayer range are p(2 x 2) (for 0.2 ML), p(2 x 6) (for 0.33 ML), (3 root 2 x root 2)R45 degrees (for 0.5 ML), and c(4 x 4) (for 0.65 ML). We find a new phase with a ((-4)(0) (2)(4)) structure for a coverage of 0.45 ML. Furthermore, we analyze the temperature stability of all phases. We find that two phases exhibit a temperature induced reversible phase transition: the (3 root 2 x root 2)R45 degrees phase becomes (root 2 x root 2)R45 degrees phase above 360 K, and the new ((-4)(0) (2)(4)) phase becomes p(2 x 2) also above 360 K. The origin of these two-phase transitions is discussed. (c) 2005 Elsevier B.V. All rights reserved.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Keyword
- phase transitions
- copper
- tin
- surface X-ray diffraction
- low energy electron diffraction (LEED)
- surface reconstruction
- (SXRD)
Publication and Content Type
- kon (subject category)
- ref (subject category)
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