Details
| Original language | English |
|---|---|
| Pages (from-to) | 303-312 |
| Number of pages | 10 |
| Journal | Surface Science |
| Volume | 540 |
| Issue number | 2-3 |
| Publication status | Published - 23 Jun 2003 |
Abstract
We investigated the adsorption of sodium on the (1 0 0) surface of germanium with LEED, STM and electron spectroscopy (XPS). Upon adsorption at room temperature a metastable p(4 × 1) and a p(2 × 1) superstructure have been found. Annealing of these structures, accompanied by thermal desorption, results in the formation of a commensurate p(3 × 2) phase after an incommensurate state has been passed. The formation of structures observed after annealing requires the rearrangement of substrate atoms. In addition strong evidence was found that all ordered phases discussed in this paper contain one adsorbate atom per unit mesh.
Keywords
- Adsorption kinetics, Alkali metals, Germanium, Low energy electron diffraction (LEED), Scanning tunneling microscopy, Surface structure, morphology, roughness, and topography, Thermal desorption
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Materials Science(all)
- Surfaces, Coatings and Films
- Materials Science(all)
- Materials Chemistry
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In: Surface Science, Vol. 540, No. 2-3, 23.06.2003, p. 303-312.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The structure of Na adsorbed on Ge(1 0 0) and its influence on substrate morphology
AU - Ernst, W.
AU - Tegenkamp, Christoph
AU - Pfnür, Herbert
AU - Jonas, K. L.
AU - Von Oeynhausen, V.
AU - Meiwes-Broer, K. H.
PY - 2003/6/23
Y1 - 2003/6/23
N2 - We investigated the adsorption of sodium on the (1 0 0) surface of germanium with LEED, STM and electron spectroscopy (XPS). Upon adsorption at room temperature a metastable p(4 × 1) and a p(2 × 1) superstructure have been found. Annealing of these structures, accompanied by thermal desorption, results in the formation of a commensurate p(3 × 2) phase after an incommensurate state has been passed. The formation of structures observed after annealing requires the rearrangement of substrate atoms. In addition strong evidence was found that all ordered phases discussed in this paper contain one adsorbate atom per unit mesh.
AB - We investigated the adsorption of sodium on the (1 0 0) surface of germanium with LEED, STM and electron spectroscopy (XPS). Upon adsorption at room temperature a metastable p(4 × 1) and a p(2 × 1) superstructure have been found. Annealing of these structures, accompanied by thermal desorption, results in the formation of a commensurate p(3 × 2) phase after an incommensurate state has been passed. The formation of structures observed after annealing requires the rearrangement of substrate atoms. In addition strong evidence was found that all ordered phases discussed in this paper contain one adsorbate atom per unit mesh.
KW - Adsorption kinetics
KW - Alkali metals
KW - Germanium
KW - Low energy electron diffraction (LEED)
KW - Scanning tunneling microscopy
KW - Surface structure, morphology, roughness, and topography
KW - Thermal desorption
UR - http://www.scopus.com/inward/record.url?scp=0042561839&partnerID=8YFLogxK
U2 - 10.1016/S0039-6028(03)00842-2
DO - 10.1016/S0039-6028(03)00842-2
M3 - Article
AN - SCOPUS:0042561839
VL - 540
SP - 303
EP - 312
JO - Surface Science
JF - Surface Science
SN - 0039-6028
IS - 2-3
ER -