Results 161 to 170 of about 845,911 (248)

Low-energy electron diffraction

International Materials Reviews, 1971
AbstractMany investigations in metallurgy and physics require a knowledge of the chemical and physical state of the surface of a solid. For example, junction effects at semiconductor interfaces depend sensitively upon the surface states, which, in turn, depend upon the surface symmetry and chemistry; rigorous studies of epitaxial overgrowth must ...
openaire   +1 more source

Low-energy electron diffraction

Contemporary Physics, 1973
Abstract This paper provides a brief introduction to the theory and practice of low-energy electron diffraction, a tcchnique which is proving useful for investigating the structure of surfaces. Emphasis is given to clean well-defined surfaces which are studied also with Auger electron spectroscopy and under conditions of ultra-high vacuum. Knowledge of
openaire   +1 more source

Low-energy electron diffraction

Physics Today, 1964
Electron diffraction has become established as a research tool for studying the structure of surface layers and thin films, and it has now been used moderately extensively for this purpose for more than a third of a century. Yet its field of usefulness is not sharply separated from that of x rays. Both require material of considerable thickness.
openaire   +1 more source

Low-energy electron diffraction amplitudes

Surface Science, 1972
Abstract The reflection (Bragg) case of the dynamical theory of diffraction is analyzed with a view to applications in low-energy electron diffraction. A theoretical description of diffraction amplitudes is developed for a model consisting of a substrate crystal periodic in three dimensions, with a two-dimensionally periodic selvedge (surface region).
J.I. Gersten, E.G. McRae
openaire   +1 more source

Diffuse low-energy electron diffraction

Progress in Surface Science, 1996
Abstract Up to the mid-1980′s low energy electron diffraction (LEED) was considered as a surface structural tool applying only to surfaces with long-range order and exhibiting sharp diffraction patterns. It was then pointed out first by theoretical work that long-range order is not really essential: diffuse LEED (DLEED) intensities, particularly ...
U. Starke, J.B. Pendry, K. Heinz
openaire   +1 more source

Holographic low-energy electron diffraction

Journal of Physics: Condensed Matter, 2001
A method for imaging of the atomic environment of the surface of a sample, characterized by the steps of: directing a beam against the surface to form an interference pattern; detecting the intensity distribution of the pattern; calculating numerical image intensity data corresponding to the intensity distribution; and reconstructing the data to form ...
K Heinz, A Seubert, D K Saldin
openaire   +1 more source

Low-Energy Electron Diffraction ☆

2018
Low-energy electron diffraction (LEED) [1] is one of the diffraction techniques utilizing low-energy electrons and a powerful method for surface structural analysis.
openaire   +2 more sources

Quasikinematic low-energy electron-diffraction surface crystallography

Physical Review B, 1993
Based on the idea of constant-momentum-transfer averaging (CMTA) of Lagally et al. and facing the problem of CMTA pointed out by Pendry, in the present work we propose the use of the quasikinematic low-energy electron-diffraction (QKLEED) calculations in comparison with the experimental CMTA curves in surface structure determinations.
, Jia, , Zhao, , Yang
openaire   +2 more sources

Low Energy Electron Diffraction

1992
One of the most powerful techniques available for surface structural analysis is low energy electron diffraction (LEED). It is widely used in materials science research to study surface structure and bonding and the effects of structure on surface processes.
openaire   +1 more source

Low energy scanning electron microscopy combined with low energy electron diffraction

Surface Science Letters, 1986
Abstract An ultra-high-vacuum (UHV) scanning-electron microscope (SEM) with a field-emission gun (FEG) is operated in a low energy region from 100 eV to 3 keV. The functions of scanning low energy electron diffraction microscopy and scanning Auger microscopy have been implemented and their performance is demonstrated.
T. Ichinokawa, Y. Ishikawa, M. Kemmochi, N. Ikeda, Y. Hosokawa, J. Kirschner   +5 more
openaire   +1 more source