Observation of the surface 4f state of CePd{sub 7} by means of the resonant-inverse-photoemission study at the Ce 4d absorption edge

Journal Article · Wed Jan 01 04:00:00 EST 1997 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.55.2623· OSTI ID:450347

Kanai, K; Tezuka, Y; Fujisawa, M; Harada, Y; Shin, S ^[1]; Schmerber, G; Kappler, J P; Parlebas, J C ^[2]; Kotani, A ^[3]

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1. Synchrotron Radiation Laboratory, Institute for Solid State Physics, University of Tokyo, Tanashi, Tokyo 188 (Japan)
2. IPCMS-GEMME (UMR 46 CNR), Universite Louis Pasteur, 23, rue du Loess, 67037 Strasbourg (France)
3. Institute for Solid State Physics, University of Tokyo, 7-22-1 Roppongi, Minato-ku, Tokyo 106 (Japan)

The resonant inverse photoemission study (RIPES) of CePd{sub 7}, has been carried out at the Ce 4d{r_arrow}4f absorption edge. The strong resonant enhancement of the 4f cross section enables us to distinguish two 4f components in the empty electronic state near the Fermi level. The incidence-angle dependence of the RIPES indicates a clear difference between ground-state configurations at the bulk and surface. It is found that the former shows a strongly hybridized 4f state, while the latter shows a localized 4f character. The angle dependence of the RIPES of {alpha}-Ce metal has been also carried out and similar results as those of CePd{sub 7} were obtained. The RIPES at the Ce 4d{r_arrow}4f edge is found to be a powerful method to investigate the surface 4f state. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 450347
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 4 Vol. 55; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM
CERIUM COMPOUNDS
CROSS SECTIONS
ELECTRON CORRELATION
ELECTRONIC STRUCTURE
F STATES
HYBRIDIZATION
INTERMETALLIC COMPOUNDS
PALLADIUM
PHOTOEMISSION
SURFACES