4f-Derived resonant photoemission in the early rare earths: possible evidence for localized screening channel

Photoemission studies of RE Ru sub 2 and RE Pd sub 3 (RE = Ce, Pr, Nd) reveal two 4f-derived features with an energy separation of approx 2.5 eV, which move in parallel to larger binding energies in going from Ce to Pr to Nd. These results, which are at variance with predictions of Anderson-model tr...

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Bibliographic Details
Published in:Physical review letters 1984-06, Vol.52 (24), p.2176-2179
Main Authors: PARKS, R. D, RAAEN, S, DENBOER, M. L, CHANG, Y.-S, WILLIAMS, G. P
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
Materials science
Metals, semimetals and alloys
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Other interactions of matter with particles and radiation
Photoemission and photoelectron spectra
Physics
Specific materials
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Summary:Photoemission studies of RE Ru sub 2 and RE Pd sub 3 (RE = Ce, Pr, Nd) reveal two 4f-derived features with an energy separation of approx 2.5 eV, which move in parallel to larger binding energies in going from Ce to Pr to Nd. These results, which are at variance with predictions of Anderson-model treatments based on the large-orbital-degeneracy approximation, are compatible with the treatments of Liu and Ho and of Riseborough, who distinguished between the two peaks on the basis of their screening geometries. 20 ref.--AA
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.52.2176