Photoemission study of an f-electron superconductor: CeRu2
J.-S. Kang, C. G. Olson, M. Hedo, Y. Inada, E. Yamamoto, Y. Haga, Y. Ōnuki, S. K. Kwon, B. I. Min
DOI 10.1103/PhysRevB.60.5348 · Physical Review B
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Abstract
Photoemission study has been performed for a high-quality single crystal of CeRu2, including resonant photoemission near the Ce 4d→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 CeRu2. 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 CeRu2.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| CeRu2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 6.1 | Pressure not reported | unknown |
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