Surface and bulk 4f-photoemission spectra of CeIn{sub 3} and CeSn{sub 3}
- Department of Physics, Tohoku University, Sendai 980-77 (Japan)
- Material Physics, Royal Institute of Technology, S-10044, Stockholm (Sweden)
- INFM-Dip. Fisica, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133, Milano (Italy)
- Department of Synchrotron Radiation Research, Institute of Physics, Lund University, Soelvegatan 14 S-223 62 Lund (Sweden)
Resonant photoemission spectroscopy was performed on CeIn{sub 3} and CeSn{sub 3} at the 4d-4f and 3d-4f core thresholds. Using the different surface sensitivity between the two photon energies, surface and bulk 4f-photoemission spectra were derived for both compounds. With the noncrossing approximation of the Anderson impurity model, the 4d-4f resonant spectra together with the surface and bulk spectra were self-consistently analyzed to obtain the microscopic parameters such as the 4f-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 4f surface core-level shift is different between CeIn{sub 3} and CeSn{sub 3}. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 527007
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 56, Issue 3; Other Information: PBD: Jul 1997
- Country of Publication:
- United States
- Language:
- English
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