Coverage dependent core level shifts for electropositive metals adsorbed on metals; Yb on Mo(110)
Abstract
The coverage dependent 4f binding energy shifts of Yb adsorbed on Mo(110) were studied by photoemission. The measurements were performed at the TGM beam line at the MAX synchrotron radiation facility in Lund, Sweden. The measured 4f binding energy undergoes a continuous shift from 1.65 eV at a coverage of θa = 0.01 to 0.88 eV at the complete monolayer. The slope of the shift curve changes drastically at the transition from an n × 2 LEED pattern to a hexagonal one. The results are discussed in terms of a total energy interpretation of the shifts and are compared to the behaviour of other electropositive metal overlayer systems.
- Publication:
-
Surface Science
- Pub Date:
- April 1989
- DOI:
- 10.1016/0039-6028(89)90804-2
- Bibcode:
- 1989SurSc.211..470S