Vibrations of adsorbed alkali-metal atoms: Na on Cu(111)
- 15 July 1990
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 42 (2) , 1467-1469
- https://doi.org/10.1103/physrevb.42.1467
Abstract
Vibrations of alkali-metal atoms adsorbed on a metal surface are observed by electron-energy-loss spectroscopy. From the loss intensity recorded for Na on Cu(111) a dynamic dipole charge of 0.5e is obtained at low alkali-metal coverage. The dynamic dipole charge is found to decrease gradually with increasing coverage making the loss peak due to Na vibrations difficult to observe for coverages above approximately half of a full monolayer.Keywords
This publication has 22 references indexed in Scilit:
- Alkali metal adsorbates on W(110): Ionic, covalent, or metallic?Physical Review Letters, 1990
- Formation of free-electron-like resonant bands for alkali-metal overlayers on simple metalsPhysical Review B, 1989
- Electronic structure of alkali-metal overlayers on the semi-infinite jellium surfacePhysical Review B, 1989
- Theory of the alkali-metal chemisorption on metal surfacesPhysical Review B, 1988
- Chemisorption of group IIA elementsPhysica Scripta, 1987
- Adsorbate-induced shifts of electronic surface states: Cs on the (100) faces of tungsten, molybdenum, and tantalumPhysical Review B, 1985
- Electronic structure of clean and oxygen-exposed Na and Cs monolayers on Cu (111)Physical Review B, 1980
- Theory of atomic chemisorption on simple metalsPhysical Review B, 1978
- Overlayer structure determination by LEED at low energies: Na on Ni (001)Journal of Physics C: Solid State Physics, 1975
- Electronic excitations in adsorbed alkali metal layersFaraday Discussions of the Chemical Society, 1975