28 research outputs found
Impact of the Ce states in the electronic structure of the intermediate-valence superconductor CeIr
The electronic structure of the -based superconductor
was studied by photoelectron spectroscopy. The energy distribution of the
states were revealed by the resonant
photoelectron spectroscopy. The states were mostly distributed
in the vicinity of the Fermi energy, suggesting the itinerant character of the
states. The contribution of the states to the
density of states (DOS) at the Fermi energy was estimated to be nearly half of
that of the states, implying that the states
have a considerable contribution to the DOS at the Fermi energy. The
core-level and X-ray absorption spectra were
analyzed based on a single-impurity Anderson model. The number of the
states in the ground state was estimated to be ,
which is much larger than the values obtained in the previous studies (i.e.,
).Comment: 9 pages, 4 figures, accepted to Electronic Structur