The Electronic Structure of Surfaces and Interfaces

摘要: Surfaces and interfaces are important in chemisorption, catalysis, microelectronic devices, etc. In a sense, surface is defect: translational invariance broken. This prevents us applying Bloch’s theorem, although Flochet’s theorem enters the picture: solutions forbidden by infinite crystal can now be allowed inside finite crystal. introduces new states, which may some specific cases. Semiconductors best example for those states play an role, reason being that appear at Fermi level. These crucial to understanding junctions between, say, metals semiconductors, clean semiconductor surfaces.