About the stability of noble-metal surfaces during VUV-photoemission experiments
| Autor: | F. Reinert, D. Ehm, F. Forster, B. Eltner, S. Schmidt, G. Nicolay, Stefan Hüfner |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Hydrogen
Chemistry Analytical chemistry chemistry.chemical_element Surfaces and Interfaces Hydrogen atom engineering.material Condensed Matter Physics Surfaces Coatings and Films Metal Adsorption Transition metal X-ray photoelectron spectroscopy visual_art Materials Chemistry visual_art.visual_art_medium engineering Physical chemistry Noble metal sense organs Surface states |
| Zdroj: | Surface Science. 543:47-56 |
| ISSN: | 0039-6028 |
| DOI: | 10.1016/s0039-6028(03)00844-6 |
| Popis: | We report on a rapid change in high-resolution VUV-photoemission spectra of the Shockley-type surface state on the (1 1 1)-surfaces of Cu, Ag and Au at low temperatures. From a systematic series of experiments and a careful analysis of the spectroscopically observed surface deterioration, we infer that the reason for the changes is an adsorption of activated hydrogen , produced by the used He-discharge lamp. This result is in contrast to the conclusions of an earlier high-resolution photoemission study, in which the aging process was interpreted as a consequence of a VUV-radiation induced structural disorder of the metal surface itself. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect