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Alkali core-level binding-energy shifts in alkali/4d-metal interface systems

In English

Författare

Summary, in English

Photoemission from different alkali core levels (Na 2p, K 3p, Rb 4p, and Cs 4d) has been studied for thin alkali films deposited on four different 4d metal surfaces: Mo(110), Rh(111), Rh(110), and Pd(100). Alkali atoms at the interface, the bulk, and at the surface of the adsorbed alkali film are found to have different core-level binding energies. It is found that the core-level binding-energy shifts of the alkali metals induced by the 4d-metal substrate increase with increasing atomic number of the alkali metal and with increasing atomic number of the 4d metal. Thermodynamical quantities such as interface segregation energies and adhesion energies are deduced from the layer-resolved shifts. Estimates of the experimental binding-energy shifts are given using semiempirical calculations, and certain complications in doing that are discussed.

Publiceringsår

1994

Språk

Engelska

Sidor

4711-4717

Publikation/Tidskrift/Serie

Physical Review B (Condensed Matter)

Volym

50

Issue

7

Dokumenttyp

Artikel i tidskrift

Förlag

American Physical Society

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0163-1829