Precise knowledge about the atomic geometries of surfaces is the basis for understanding surface properties such as electronic structure and adsorption processes of molecules.
The dynamic analysis of intensity vs. energy (IV) curves of low-energy electron diffraction is the most powerful method for determining the surface geometries of crystal surfaces.
The disadvantage of this method is that it requires a rather long CPU time to calculate IV curves. When we treat complex surface structures with many atoms in a surface unit cell, we must carry out calculations using many possible surface structural models while changing their structural parameters, and compare the calculated spectra with experimental ones.
The recently developed tensor LEED method drastically reduces these timeconsuming calculations. This paper briefly reports on the characteristic features and advantages of tensor LEED compared to the canventional method.
Some examples of the application of this mathod to the determination of surface structures are also reported.
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