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Title: [Inelastic electron scattering from surfaces]. [Annual] progress report

Abstract

This program is aimed at the quantitative study of surface dynamical processes (vibrational, magnetic excitations) in crystalline slabs, ultrathin-layered materials, and chemisorbed systems on substrates, and of the geometric structure connected to these dynamical excitations. High-resolution electron-energy loss spectroscopy (HREELS) is a powerful probe. Off-specular excitation cross sections are much larger if electron energies are in the LEED range (50-300 eV). The analyses has been used to study surfaces of ordered alloys (NiAl). Ab-initio surface lattice dynamical results were combined with phonon-loss cross sections to achieve a more accurate microscopic description. First-principles phonon eigenvectors and eigenfrequencies were used as inputs to electron-energy-loss multiple scattering cross-section calculations. The combined microscopic approach was used to analyze EELS data of Cu(0001) and Ag(001) at two points. Positron diffraction is discussed as a structural and imaging tool. The relation between geometric structure of a film and its local magnetic properties will be studied in the future, along with other things.

Publication Date:
Research Org.:
Wisconsin Univ., Milwaukee, WI (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10190864
Report Number(s):
DOE/ER/45076-3
ON: DE94001738; BR: ER0000000/KC0202030; TRN: 93:023090
DOE Contract Number:  
FG02-84ER45076
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: [1993]
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; SURFACES; ENERGY-LOSS SPECTROSCOPY; ELECTRONS; INELASTIC SCATTERING; POSITRONS; DIFFRACTION; PROGRESS REPORT; FILMS; 400101; 360104; ACTIVATION, NUCLEAR REACTION, RADIOMETRIC, AND RADIOCHEMICAL PROCEDURES; PHYSICAL PROPERTIES

Citation Formats

. [Inelastic electron scattering from surfaces]. [Annual] progress report. United States: N. p., 1993. Web. doi:10.2172/10190864.
. [Inelastic electron scattering from surfaces]. [Annual] progress report. United States. https://doi.org/10.2172/10190864
. 1993. "[Inelastic electron scattering from surfaces]. [Annual] progress report". United States. https://doi.org/10.2172/10190864. https://www.osti.gov/servlets/purl/10190864.
@article{osti_10190864,
title = {[Inelastic electron scattering from surfaces]. [Annual] progress report},
author = {},
abstractNote = {This program is aimed at the quantitative study of surface dynamical processes (vibrational, magnetic excitations) in crystalline slabs, ultrathin-layered materials, and chemisorbed systems on substrates, and of the geometric structure connected to these dynamical excitations. High-resolution electron-energy loss spectroscopy (HREELS) is a powerful probe. Off-specular excitation cross sections are much larger if electron energies are in the LEED range (50-300 eV). The analyses has been used to study surfaces of ordered alloys (NiAl). Ab-initio surface lattice dynamical results were combined with phonon-loss cross sections to achieve a more accurate microscopic description. First-principles phonon eigenvectors and eigenfrequencies were used as inputs to electron-energy-loss multiple scattering cross-section calculations. The combined microscopic approach was used to analyze EELS data of Cu(0001) and Ag(001) at two points. Positron diffraction is discussed as a structural and imaging tool. The relation between geometric structure of a film and its local magnetic properties will be studied in the future, along with other things.},
doi = {10.2172/10190864},
url = {https://www.osti.gov/biblio/10190864}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Oct 01 00:00:00 EDT 1993},
month = {Fri Oct 01 00:00:00 EDT 1993}
}