Dimensionality and its effects upon the valence electronic structure of ordered metallic systems
The system c(10x2)Ag/Cu(001) was investigated with Angle-Resolved Photoemission (ARP), Low Energy Electron Diffraction (LEED) and Auger Electron Spectroscopy (AES). LEED and AES provided the calibration of a quartz microbalance used to measure the amount of silver evaporated onto the copper single crystal and also established the monolayer geometrical structure at one monolayer exposure. An off-normal ARP bandmapping study performed with polarized HeI and NeI radiation demonstrated the electronically two-dimensional nature of the silver d-bands at coverages of near one monolayer. The states at the surface Brillouin Zone center were assigned upon the basis of their polarization dependences and a structural model of hexagonal symmetry. A normal emission ARP experiment was performed at the Stanford Synchrotron Radiation Laboratory (SSRL) over the photon energy range of 6 to 32 eV. Data from it documented the evolution of the valence electronic structure of the silver overlayer from a two-dimensional hexagonal valence to a three-dimensional behavior converging towards that of bulk Ag(111). A structural study was attempted using the ARP technique of Normal Emission Photoelectron Diffraction over the photon energy range of 3.4 to 3.7 keV at SSRL, the results of which are inconclusive.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6001358
- Report Number(s):
- LBL-14704; ON: DE83016320
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
COPPER
SURFACE PROPERTIES
SILVER
CRYSTAL STRUCTURE
HCP LATTICES
AUGER ELECTRON SPECTROSCOPY
BINDING ENERGY
ELECTRON DIFFRACTION
EXPERIMENTAL DATA
PHOTOEMISSION
COHERENT SCATTERING
CRYSTAL LATTICES
DATA
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
EMISSION
ENERGY
HEXAGONAL LATTICES
INFORMATION
METALS
NUMERICAL DATA
SCATTERING
SECONDARY EMISSION
SPECTROSCOPY
TRANSITION ELEMENTS
360102* - Metals & Alloys- Structure & Phase Studies