Structure study of Si(111)-(7×7) by channeling and blocking

The structure of the Si(111)-(7×7) surface has been studied by medium-energy ion channeling and blocking. From a comparison of experimental results of Monte Carlo calculations for a number of structural models we conclude that the models proposed by Bennett and by McRae and by Himpsel and Batra give reasonable to good agreement with experimental results. © 1984 The American Physical Society.