Journalartikel

Jahr der Veröffentlichung: 1995

Seiten: 2927-2934

Zeitschrift: Physical Review B

Bandnummer: 52

Heftnummer: 4

ISSN: 0163-1829

DOI Link: https://doi.org/10.1103/PhysRevB.52.2927

Verlag: American Physical Society

Abstract: 

 The structural properties of Li films on a Ru(0001) surface during initial growth were determined employing the technique of low-energy electron diffraction (LEED). For submonolayer coverages between ΘLi=0.61 and ΘLI=0.78, incommensurate structures oriented along high-symmetry directions of the substrate were observed. Fully dynamical LEED calculations of a (5×5) structure modeling the Li overlayer at ΘLi=0.64 revealed a Li-Ru interlayer spacing of 2.17±0.10 Å. The computational effort for solving this structure could be significantly reduced by using a (5×1) unit mesh instead of the (5×5) unit cell without losing structural information. The first Li layer is completed at a coverage of 0.78. In the multilayer regime, the Ru(0001)-Li system exhibits also long-range order as indicated by adsorbate-induced hexagonal LEED patterns. LEED structure analyses of Li films with thicknesses of two and three layers revealed that the Li film is grown fcc(111)-like on Ru(0001). The interlayer spacings are DLi−Li=2.35±0.10 Å and DLi−Ru=2.35±0.10 Å; the Li hard-sphere radius turns out to be 1.52±0.05 Å, close to the metallic Pauling radius.

Harvard-Zitierstil: Gierer, M., Over, H., Bludau, H. and Ertl, G. (1995) Incommensurate structures and epitaxial growth of Li on Ru(0001): A quantitative low-energy electron-diffraction study, Physical Review B, 52(4), pp. 2927-2934. https://doi.org/10.1103/PhysRevB.52.2927

APA-Zitierstil: Gierer, M., Over, H., Bludau, H., & Ertl, G. (1995). Incommensurate structures and epitaxial growth of Li on Ru(0001): A quantitative low-energy electron-diffraction study. Physical Review B. 52(4), 2927-2934. https://doi.org/10.1103/PhysRevB.52.2927