Electronic structure of Cs multilayer and monolayer adsorbed on Ru(001): A photoemission study
Journal Article
·
· J. Chem. Phys.; (United States)
The electronic structure of Cs adsorbed on Ru(001) at multilayer and monolayer coverages has been investigated with high resolution photoelectron spectroscopy (PES) using synchrotron radiation. It is found that at multilayer coverage, the electron distribution curve (EDC) of the Cs overlayer is essentially the same as that of the Cs metal reported previously except that, with the high resolution, a surface atom core-level (Cs /sup 5/p/sub 32/) binding-energy shift of +0.24 eV is observed for the first time. It is also found that at monolayer coverage which exhibits a ( 78 x 78 )-R30/sup 0/ LEED pattern, the Cs 5p/sub 32/ level shifts by 1.0 eV to lower binding energy relative to that of the multilayer; this shift is accompanied by a significant linewidth broadening and a nearly complete suppression of O/sub 3/VV Auger emission. These results are interpreted on the basis of the volume effect and a rehybridization mechanism in which the compression of the Cs atom and the interplay of conduction and 5d electrons at the Cs site are crucial to the 5p binding energy shift, core hole lifetime, and Auger transition.
- Research Organization:
- Department of Chemistry, Brookhaven National Laboratory, Upton, New York 11973
- OSTI ID:
- 7148771
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 89:2; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACCELERATORS
ADSORPTION
ALKALI METALS
AUGER EFFECT
BINDING ENERGY
BREMSSTRAHLUNG
CESIUM
CYCLIC ACCELERATORS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY
FILMS
LAYERS
LINE BROADENING
METALS
NSLS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PLATINUM METALS
RADIATION SOURCES
RADIATIONS
RUTHENIUM
SECONDARY EMISSION
SORPTION
SORPTIVE PROPERTIES
SPECTRAL SHIFT
SPECTROSCOPY
SURFACE PROPERTIES
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
TRANSITION ELEMENTS
400201* -- Chemical & Physicochemical Properties
ACCELERATORS
ADSORPTION
ALKALI METALS
AUGER EFFECT
BINDING ENERGY
BREMSSTRAHLUNG
CESIUM
CYCLIC ACCELERATORS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ELEMENTS
EMISSION
ENERGY
FILMS
LAYERS
LINE BROADENING
METALS
NSLS
PHOTOELECTRON SPECTROSCOPY
PHOTOEMISSION
PLATINUM METALS
RADIATION SOURCES
RADIATIONS
RUTHENIUM
SECONDARY EMISSION
SORPTION
SORPTIVE PROPERTIES
SPECTRAL SHIFT
SPECTROSCOPY
SURFACE PROPERTIES
SYNCHROTRON RADIATION
SYNCHROTRON RADIATION SOURCES
SYNCHROTRONS
TRANSITION ELEMENTS