Observation of a low-binding-energy peak in the 2p core-level photoemission from oxidized Al(111)

Summary, in English

High-resolution photoemission studies of oxidation of the Al(111) surface have been performed. The appearance of a component at lower binding energy than the metallic bulk Al emission in the Al 2p spectrum at oxygen exposures above ∼50 langmuir (1 L = 10-6 Torr s) is argued to be due to Al atoms which do not bond directly to oxygen atoms at the oxide-metal interface. Low-energy electron diffraction initially shows a 1×1 structure, which subsequently fades away at higher oxygen exposures, 400 L.

• Author: C. Berg; S. Raaen; A. Borg; J. N. Andersen; E. Lundgren; R. Nyholm
• Department/s: Synchrotron Radiation Research; MAX IV Laboratory
• Publishing year: 1993
• Language: English
• Pages: 13063-13066
• Publication/Series: Physical Review B (Condensed Matter)
• Volume: 47
• Issue: 19
• Links: http://dx.doi.org/10.1103/PhysRevB.47.13063
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Atom and Molecular Physics and Optics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0163-1829