title: Photoemission insight into heavy-fermion behavior in YbRh2Si2.
abstract: As shown by angle-resolved photoemission (PE), hybridization of bulk Yb 4f(2+) states with a shallow-lying valence band of the same symmetry leads in YbRh2Si2 to dispersion of a 4f PE signal in the region of the Kondo resonance with a Fermi-energy crossing close to Gamma[over ]. Additionally, renormalization of the valence state results in the formation of a heavy band that disperses parallel to the 4f originating signal. The symmetry and character of the states are probed by circular dichroism and the photon-energy dependence of the PE cross sections.
authors: Institut für Festkörperphysik, Technische Universität Dresden, D-01062 Dresden, Germany.
authors: D V
authors: DV
authors: Vyalikh
authors: S
authors: S
authors: Danzenbächer
authors: A N
authors: AN
authors: Yaresko
authors: M
authors: M
authors: Holder
authors: Yu
authors: Y
authors: Kucherenko
authors: C
authors: C
authors: Laubschat
authors: C
authors: C
authors: Krellner
authors: Z
authors: Z
authors: Hossain
authors: C
authors: C
authors: Geibel
authors: M
authors: M
authors: Shi
authors: L
authors: L
authors: Patthey
authors: S L
authors: SL
authors: Molodtsov