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Spot-profile-analysis LEED

In the technique of spot-profile analysis LEED (SPA-LEED) [29, 30] intensity variations across LEED diffraction spots are measured. The technique provides information on both periodic and non-periodic arrangements of superstructure domains, terraces or facets, and strained regions. The interpretation of spot profiles is simplified due to the validity of the kinematic approximation, which is not the case for LEED I-V analysis. Deviations from simple structures resulting from defects produce characteristic modifications of the spot profile, so that a quantitative evaluation is possible. SPA-LEED has proven itself to be useful in the study of dynamic phenomena on surfaces such as phase transitions. Several examples of this capability are discussed in section 3 for Pb on Cu. [Pg.155]

SPA-LEED Spot profile analysis - low energy electron difiraction... [Pg.260]

SCH Scheithauer, U., Meyer, G., Henzler, M. A new LEED instrument for quantitative spot profile analysis Surf. Sci. 178 (1986) 441. [Pg.49]

SPA-LEED spot profile analysis low-energy electron diffraction... [Pg.1]

Analysis of the LEED pattern or of spot profiles does not give any quantitative information about the position of the atoms within the surface unit cell. This type of information is hidden in the energy-dependence of the spot intensities, the so-called LEED 7-Vcurves. [Pg.79]

See other pages where Spot-profile-analysis LEED is mentioned: [Pg.159]    [Pg.154]    [Pg.187]    [Pg.46]    [Pg.27]    [Pg.94]    [Pg.547]    [Pg.159]    [Pg.154]    [Pg.187]    [Pg.46]    [Pg.27]    [Pg.94]    [Pg.547]    [Pg.73]    [Pg.78]    [Pg.152]    [Pg.164]    [Pg.204]    [Pg.657]    [Pg.65]    [Pg.44]    [Pg.155]    [Pg.156]   


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