Surface and bulk electronic structure of metallic cerium systems

Kaindl, G.; Weschke, E.; Laubschat, C.; Ecker, R.; Höhr, A.

doi:10.1016/0921-4526(93)90490-w

Cited by 7 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When we assume that this difference is due to the difference of the surface-to-bulk ratio, we may extract surface and bulk components from the two resonant spectra. 7,21 Providing that the surface contribution comes from the topmost Ce layer and the photoelectrons are emitted in the normal direction to the surface as expected from the present experimental setup, the surface-to-bulk emission ratio is given by exp(d/)Ϫ1, where d is the thickness of the surface layer and is the electron escape depth at a given kinetic energy. Using the formula for the electron escape depth by Tanuma, Powell, and Penn, 22 we obtain the values of for the 4d(3d)-4 f resonant spectra.…”

Section: Resultsmentioning

confidence: 86%

Surface and bulk4f-photoemission spectra ofCeIn3and
Kim
¹
,
Tjernberg
²
,
Chiaia
³

et al. 1997
Phys. Rev. B
35
4
27
0
View full text Add to dashboard Cite

Resonant photoemission spectroscopy was performed on CeIn 3 and CeSn 3 at the 4d-4 f and 3d-4 f core thresholds. Using the different surface sensitivity between the two photon energies, surface and bulk 4 f -photoemission spectra were derived for both compounds. With the noncrossing approximation of the Anderson impurity model, the 4d-4 f resonant spectra together with the surface and bulk spectra were selfconsistently analyzed to obtain the microscopic parameters such as the 4 f -electron energy and the hybridization strength with conduction electrons. The result shows a substantial difference in these parameters between the surface and the bulk, indicating that it is important to take into account the surface effect in analyzing photoemission spectra of Ce compounds. It is also found that the 4 f surface core-level shift is different

show abstract

Section: Resultsmentioning

confidence: 86%