Abstract
We have performed ultrahigh-resolution (ΔE = 8 meV) photoemission spectroscopy to examine the possibility of CePd3 being a `Kondo insulator' as suggested by a recent optical measurement. We found that the photoemission spectrum of CePd3 does not show any indication of (pseudo) gap at EF, differing from the well-established temperature-dependent (pseudo) gap in Kondo insulators. The Ce 4f spectrum clearly shows the `Kondo resonance peak' at EF, indicating the intrinsic metallic nature of CePd3. These results strongly suggest that CePd3 is not a Kondo insulator but a conventional Kondo metal as suggested by thermodynamic measurements.
Original language | English |
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Pages (from-to) | 735-740 |
Number of pages | 6 |
Journal | Journal of Electron Spectroscopy and Related Phenomena |
Volume | 114-116 |
DOIs | |
Publication status | Published - 2001 Mar |
Event | 8th International Conference on Electronic Spectroscopy and Structure (ICESS-8) - Berkeley, CA, USA Duration: 2000 Aug 8 → 2000 Aug 12 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Radiation
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Spectroscopy
- Physical and Theoretical Chemistry