Influence of matrix element effects in determining the density of states from photoemission spectra: Cu-Pd alloy
Journal Article
·
· Physical Review Letters; (United States)
- Department of Physics, Seoul National University, Seoul 151-742 (Korea, Republic of) Department of Physics, University of Michigan, Ann Arbor, Michigan 48109-1120 (United States) Department of Physics, Pohang Institute of Science Technology, Pohang 790-784 (Korea, Republic of)
It is found that a change of the photoionization matrix element with the binding energy in the valence band can cause a substantial discrepancy between the density of states and the photoemission spectrum for [ital d]-band metals and alloys even in the x-ray photoemission spectroscopy regime. This is the main cause of the controversial discrepancy between photoemission spectra and theoretical density of states predicted in the Korringa-Kohn-Rostoker coherent-potential approximation for Cu-Pd alloys, rather than the local lattice relaxation around Pd atomic sites.
- DOE Contract Number:
- FG02-90ER45416
- OSTI ID:
- 6543678
- Journal Information:
- Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 70:23; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
BINDING ENERGY
BREMSSTRAHLUNG
COPPER ALLOYS
COPPER BASE ALLOYS
DATA ANALYSIS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY
ENERGY-LEVEL DENSITY
IONIZATION
MATRIX ELEMENTS
PALLADIUM ALLOYS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PLATINUM METAL ALLOYS
RADIATIONS
SPECTROSCOPY
SYNCHROTRON RADIATION
X-RAY SPECTROSCOPY
360104* -- Metals & Alloys-- Physical Properties
665100 -- Nuclear Techniques in Condensed Matter Physics -- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOY SYSTEMS
ALLOYS
BINARY ALLOY SYSTEMS
BINDING ENERGY
BREMSSTRAHLUNG
COPPER ALLOYS
COPPER BASE ALLOYS
DATA ANALYSIS
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELECTRONIC STRUCTURE
ENERGY
ENERGY-LEVEL DENSITY
IONIZATION
MATRIX ELEMENTS
PALLADIUM ALLOYS
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PLATINUM METAL ALLOYS
RADIATIONS
SPECTROSCOPY
SYNCHROTRON RADIATION
X-RAY SPECTROSCOPY