Gleichweit C, Neiß C, Maisel S, Bauer U, Späth F, Höfert O, Vollnhals F, Drost M, Marbach H, Görling A, Steinrück HP, Papp C (2015)
Publication Language: English
Publication Status: Published
Publication Type: Journal article
Publication year: 2015
Publisher: American Physical Society
Book Volume: 92
Pages Range: 014114
Journal Issue: 1
DOI: 10.1103/PhysRevB.92.014114
The preparations of single (monolayer) and bulk carbides on the Mo(110) and Mo(100) single crystals are followed in situ at 1200 K using synchrotron-based high-resolution x-ray photoelectron spectroscopy of the C 1s and core Mo 3d(5/2) levels. By comparing the experimental results to first principles calculations using density functional theory, we suggest real-space surface structures for the carbide-modified surfaces. For a monolayer carbide on Mo(110), carbon dimers adsorb in the long-bridge site, most likely at a coverage of 3/8 ML carbon atoms per Mo surface atom. For the bulk carbide, we find a coverage of similar to 0.5ML on the surface, and the calculations show that single carbon atoms are more stable than dimers on the surface. The monolayer carbide on Mo(100) exhibits a coverage of similar to 1ML and agrees with previous studies, while the bulk carbide preparation probably leads to a faceting of the surface.
APA:
Gleichweit, C., Neiß, C., Maisel, S., Bauer, U., Späth, F., Höfert, O.,... Papp, C. (2015). Comparative study of the carbide-modified surfaces C/Mo(110) and C/Mo(100) using high-resolution x-ray photoelectron spectroscopy. Physical Review B, 92(1), 014114. https://doi.org/10.1103/PhysRevB.92.014114
MLA:
Gleichweit, Christoph, et al. "Comparative study of the carbide-modified surfaces C/Mo(110) and C/Mo(100) using high-resolution x-ray photoelectron spectroscopy." Physical Review B 92.1 (2015): 014114.
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