64 research outputs found
Itinerant U 5f band states in the layered compound UFeGa5 observed by soft X-ray angle-resolved photoemission spectroscopy
We have performed angle-resolved photoemission spectroscopy (ARPES)
experiments on paramagnetic UFeGa5 using soft X-ray synchrotron radiation
(hn=500eV) and derived the bulk- and U 5f-sensitive electronic structure of
UFeGa5. Although the agreement between the experimental band structure and the
LDA calculation treating U 5f electrons as being itinerant is qualitative, the
morphology of the Fermi surface is well explained by the calculation,
suggesting that the U 5f states can be essentially understood within the
itinerant-electron model.Comment: 13 pages, 4 figur
Direct observation of quasi-particle band in CeIrIn: Angle-resolved photoemission spectroscopy study
We have performed a high-resolution angle resolved Ce 4 resonant
photoemission experiment on the heavy fermion superconductor CeIrIn. We
have observed a quasi-particle band which has an energy dispersion of
meV in the Ce 4 on-resonance spectra. The result suggests that although the
4 spectra are dominated by the localized/correlated character, the small
itinerant component is responsible for the superconductivity in this compound.Comment: 5 pages, 3 figure
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