Hybridization phenomena in nearly-half-filled f-shell electron systems: photoemission study of EuNi2P2.
The mixed-valent compound EuNi2P2 was studied by photoemission. Observed splittings and dispersions of the Eu 4f;{6} final state close to energy crossings of the Eu 4f and Ni 3d states are explained in terms of hybridization by a momentum and energy dependence of the electron hopping matrix element. These data obtained for a system with more than one 4f electron (hole) show that dispersions and hybridization gaps related to Kondo and heavy-fermion behavior can be found in other rare-earth-metal compounds apart from Ce and Yb-based ones.
Danzenbächer
S
S
Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany.
Vyalikh
D V
DV
Kucherenko
Yu
Y
Kade
A
A
Laubschat
C
C
Caroca-Canales
N
N
Krellner
C
C
Geibel
C
C
Fedorov
A V
AV
Dessau
D S
DS
Follath
R
R
Eberhardt
W
W
Molodtsov
S L
SL