Momentum-resolved photoemission of the Kondo peak in an ordered Ce-containing alloy
- Institut de Physique, Universite de Neuchatel, CH-2000 Neuchatel (Switzerland)
A comparison of uv-photoemission spectra recorded from the surface alloys Pt(111)({radical}(3){times}{radical}(3))R30{degree}Ce and Pt(111)(2{times}2)La allows the contribution from the 4f electrons to be seen easily. The valence-band structure of these two surfaces is very similar, and the most obvious 4f contribution in high-resolution photoemission spectra of the Ce-containing alloy is the tail of the Kondo peak cut at E{sub F}. Within the limits of our measurement, no dispersion of this feature in the occupied regime is detected. The Kondo peak displays a marked intensity dependence on the emission angle, suggesting that hybridization is present in only a limited part of reciprocal space. The temperature dependence of this near-E{sub F} feature supports this interpretation. {copyright} {ital 1997} {ital The American Physical Society}
- OSTI ID:
- 544960
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 56, Issue 18; Other Information: PBD: Nov 1997
- Country of Publication:
- United States
- Language:
- English
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