The band structure of carbonmonoxide on 2-D Au islands on graphene
| Autor: | Peter A. Dowben, D. W. Goodman, Li Liu, Lu Wang, Ya. B. Losovyj, N. Lozova, Wai-Ning Mei, Jiaxin Zheng, Khabiboulakh Katsiev, Elio Vescovo |
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| Rok vydání: | 2014 |
| Předmět: |
Condensed matter physics
Graphene Chemistry General Physics and Astronomy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films law.invention Metal Chemical physics law visual_art Monolayer visual_art.visual_art_medium Molecular orbital Density functional theory Electronic band structure Dispersion (chemistry) Single crystal |
| Zdroj: | Applied Surface Science. 304:35-39 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2014.01.089 |
| Popis: | The dispersion of the occupied molecular orbitals of carbon monoxide adsorbed on Au 2D islands, vapor-deposited on graphene/Ru(0 0 0 1), is seen to be wave vector dependent, as revealed by angle-resolved photoemission. The band dispersion is similar to CO monolayers adsorbed on many single crystal metal surfaces. Thus not only are the adsorbed gold islands on graphene flat and crystalline, as evident in the dispersion of the Au d-states, but the CO molecular adlayer is both molecular and ordered as well. The experimental angle-resolved photoemission combined with model calculations of the occupied CO band structure, suggest that, in spite of being a very weakly bound adsorbate, the CO adlayer on Au 2D islands on graphene is strongly hybridized to the Au layer. |
| Databáze: | OpenAIRE |
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