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Observation of stru...
Observation of structure changes for Li/Cu(111) by photoemission from Li core and quantum-well states
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- Carlsson, Anna K, 1966 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Claesson, Dan, 1969 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Katrich, Galina (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Lindgren, Stig-Åke, 1950 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Wallden, Lars Erik Gustaf, 1941 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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(creator_code:org_t)
- 1998
- 1998
- English.
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In: Physical Review B - Condensed Matter and Materials Physics. - 2469-9950 .- 2469-9969. ; 57:20, s. 13192 - 13198
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Abstract
Subject headings
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- Via photoemission from discrete quantum-well valence states and the Li 1s core level, three different types of atom rearrangements are observed for Cu(111)/Li. In the monolayer coverage range gradual energy shifts for the core-level as well as a quantum-well state reflect a gradual lateral compression of the Li overlayer as more atoms are adsorbed. The onset of Li substitution and formation of a (2×2) structure when, at RT, monolayer Li coverage is exceeded, is monitored via the disappearance and appearance of quantum-well states characteristic of the adsorbed full monolayer of Li and the part substitutional (2×2) structure, respectively. A splitting of the Li 1s emission peak into a doublet reflects the two different Li sites characteristic of the (2×2) phase. A small energy shift of the quantum-well state (25 meV) indicates that, if it is cooled (170 K), the substitutional structure is unstable with respect to Li adsorption.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik -- Övrig annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies -- Other Engineering and Technologies not elsewhere specified (hsv//eng)
Publication and Content Type
- art (subject category)
- ref (subject category)
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