J. Reinmuth et al., SPIN-DEPENDENT LOCAL-DENSITY OF EMPTY ELECTRONIC STATES IN FENI3, Physical review. B, Condensed matter, 56(20), 1997, pp. 12893-12898
The electronic structure of the magnetic compound FeNi3 is investigate
d by spin-resolved soft-x-ray appearance potential spectroscopy. The s
pectra which reflect the local densities of empty states on the Fe and
Ni sites in this compound are compared with results for the pure elem
ents. A detailed description and interpretation of the experimental sp
ectra is achieved by a comparison with theoretical spectra. They were
calculated, within a single-particle picture, from the underlying elec
tronic structure including a proper treatment of transition matrix ele
ments. The experimentally observed energetic shifts and spin-asymmetry
changes between the pure elements and the compound are understood as
a consequence of changes in the spin-dependent local densities of stat
es and in the core-level binding energies. In particular, this allowed
us to determine the changes in the binding energies for the 2p(3/2) s
tates of Fe and Ni in the compound with respect to the pure elements.