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Layer dependent core level binding energy shifts : Na, K, Rb and Cs on Al(111)

Author

Summary, in English

Layer resolved core level spectra are presented for Na, K, Rb and Cs films on Al(111). From the development of the spectra, it is possible to distinguish emission from alkali atoms at the interface, in the bulk, and at the surface of the adsorbed layers. The core level binding energy shifts are discussed in terms of adhesion and interface segregation energies. It is found experimentally that the Al induced core level binding energy shifts of the alkalis are increasing with increasing atomic number of the alkali metal. This trend is qualitatively reproduced by semi-empirical calculations.

Publishing year

1993-01-20

Language

English

Pages

83-90

Publication/Series

Surface Science

Volume

281

Issue

1-2

Document type

Journal article

Publisher

Elsevier

Status

Published

ISBN/ISSN/Other

  • ISSN: 0039-6028