6533b838fe1ef96bd12a504a
RESEARCH PRODUCT
The surface electronic structure of stoichiometric and defective LiF surfaces studied with MIES and UPS in combination with ab-initio calculations
M. BrauseStefan KrischokD. OchsF. WiegershausV. KempterP. StrackeV. E. PuchinWolfgang Maus-friedrichsAlexander L. Shlugersubject
ChemistrySurfaces and InterfacesElectronElectronic structureCondensed Matter PhysicsElectron spectroscopySurfaces Coatings and FilmsCondensed Matter::Materials ScienceX-ray photoelectron spectroscopyAb initio quantum chemistry methodsMetastabilityPhysics::Atomic and Molecular ClustersMaterials ChemistryAtomic physicsSingle crystalSurface statesdescription
Abstract UPS (He I) and metastable impact electron spectroscopy (MIES) spectra of the LiF(100) single crystal surface and stoichiometric LiF films are presented. The spectra are interpreted on the basis of ab-initio electronic structure calculations. Defective surfaces, produced by electron dosing, were studied in the same manner. The MIES spectra reveal that the electron dosing produces metallic patches on the surface, but no uniform Li adlayer. The calculation show that the F-center contribution to the electron emission is very close in energy to that from the metallic patches; thus, the two contributions cannot be distinguished by the present experimental techniques.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-07-01 | Surface Science |