Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

X-ray photoemission from Ce core levels of CePd3, CeSe, CeAl2 and CeCu2Si2

There are no MPG-Authors available
External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Lässer, R., Fuggle, J. C., Beyss, M., Campagna, M., Steglich, F., & Hulliger, F. (1980). X-ray photoemission from Ce core levels of CePd3, CeSe, CeAl2 and CeCu2Si2. Physica B+C, 102(1-3), 360-366. doi:10.1016/0378-4363(80)90192-8.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0019-C27E-9
The central and new aspect of this paper is the interference in core level spectra between mixed valence features and screening mechanisms. We investigated the 3d and 4d X-ray photoelectron spectra (XPS) of Ce atoms in CePd3 (where configuration mixing has been established by other methods), CeSe (which is known to contain only Ce3+ with the spectra of CeCu2Si2 and CeAl2. Even in the cases with a stable 4f1 configuration, the Ce 3d spectra are found to contain so-called shake down (4f2) contributions as a result of the change of the initial 4f configuration due to screening of the 3d final state hole. Therefore, only qualitative lower limits for the mixed valence ratio Ce3+:Ce4+ can be derived from the XPS core level spectra. These ratios are ≈10:1 for CeCu2Si2 and ≈5:1 for CeAl2. The multiplet splittings and shake down probabilities for core level XPS peaks of Ce are found to be strongly dependent upon chemical environment.