Growth of Au on Ag(110): electronic structure by photoemission

[摘要] Au films, from the submonolayer range up to eight monolayers. have been deposited in situ at 300 K. The electronic structure has been probed by ultra-violet valence-band photoemission. The discussion of our findings is based on a detailed knowledge of the geometrical structure of each film. With increasing Au coverage the valence-band structure changes from Ag- to Au-bulk-like. At intermediate Au coverages an intel face state is observed. It appears to be localized between the first and second surface layer of areas where Au and Ag atoms are inverted. Moreover, the sp-type surface state observed for emission along (Y) over bar in the case of the clean Ag(110) surface is strongly influenced by these inverted Au/Ag areas in that it shifts to higher binding energies. For higher Au coverages this surface state gradually fades out. (C) 1999 Elsevier Science B.V. All rights reserved.

[发布日期] 1999-08-02

[效力级别]  Proceedings Paper

[关键词] Au films;electronic structure;growth;photoemission