抄録
The recent advance of the analysis of atomic structures at crystal surfaces by means of low-energy electron diffraction (LEED) is reviewed.
A short list of the basic physical factors determining the LEED intensities is followed by a description of the basic ideas of the theoretical methods used at present for calculating intensities.
A few examples of the comparison between theoretical and experimental results are shown, at first for clean metal surfaces and then those with simple adsorbed layers. Along with that a few interesting physical problems are discussed.
The so-called averaging methods for obtaining kinematical intensities are shortly reviewed.
It is concluded that the theory can reproduce experimental results more or less satisfactorily in these simple cases, so that we can expect a further development into more complicated, but more practically significant cases.
