SURFACE GREEN-FUNCTION MATCHING

The evolution of the surface Green function matching (SGFM) method is reviewed in relation to the experimental and computational development s which influenced its evolution or changed its scope. Starting with e lectronic surface/interface states, the theory is extended to arbitrar y elementary excitations. The other extension of the formalism is from continuous to discrete media. Finally, the extension from single to m ultiple interfaces provides a way of dealing with the new layered syst ems, e.g., quantum wells and superlattices.