Photoemission study of an f-electron superconductor: CeRu{sub 2}

Journal Article · Sun Aug 01 04:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.5348· OSTI ID:362698

Kang, J ^[1]; Olson, C G ^[2]; Hedo, M; Inada, Y ^[3]; Yamamoto, E; Haga, Y ^[4]; Onuki, Y ^[3]; Kwon, S K; Min, B I ^[5]

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1. Department of Physics, The Catholic University of Korea, Puchon 422-743 (Korea)
2. Ames Laboratory, Iowa State University, Ames, Iowa 50011 (United States)
3. Graduate School of Science, Osaka University, Toyonaka 560 (Japan)
4. Advance Science Research Center, Japan Atomic Research Institute, Tokai, Ibaraki 319-11 (Japan)
5. Department of Physics, Pohang University of Science and Technology, Pohang 790-784 (Korea)

Photoemission study has been performed for a high-quality single crystal of CeRu{sub 2}, including resonant photoemission near the Ce 4d{r_arrow}4f absorption edge and high-resolution photoemission at a low-photon energy. Resonant photoemission study provides evidence for the large hybridization between Ce 4f and conduction electrons, indicating mixed-valence in CeRu{sub 2}. It is found that the line shape of the high-resolution spectrum near the Fermi level depends on the experimental conditions and the sample surface treatment. Comparison of photoemission data to the calculated density of states reveals that band calculations provide a reasonably good description of the electronic structure of CeRu{sub 2}. {copyright} {ital 1999} {ital The American Physical Society}

• OSTI ID: 362698
• Journal Information: Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 8 Vol. 60; ISSN PRBMDO; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CERIUM ALLOYS
HYBRIDIZATION
LAVES PHASES
PHOTOEMISSION
RUTHENIUM ALLOYS
SURFACE TREATMENTS
TYPE-II SUPERCONDUCTORS