The origin of surface states

摘要: Experimentally detected surface states have not yet been correlated systematically with texture. For that purpose important parameters are listed and used for a classification of respect to The theoretical results on state properties experimental methods their determination reviewed discussed. problem the origin experimentally found is considered be solved qualitatively as soon texture determined. Performed proposed experiments silicon germanium which suited give direct information correlation described It shown at clean surfaces due periodic structure independent imperfections.