title: Renormalization of bulk magnetic electron states at high binding energies.
abstract: The quasiparticle dynamics of electrons in a magnetically ordered state is investigated by high-resolution angle-resolved photoemission of Ni(110) at 10 K. The self-energy is extracted for high binding energies reaching up to 500 meV, using a Gutzwiller calculation as a reference frame for correlated quasiparticles. Significant deviations exist in the 300 meV range, as identified on magnetic bulk bands for the first time. The discrepancy is strikingly well described by a self-energy model assuming interactions with spin excitations. Implications relating to different electron-electron correlation regimes are discussed.
authors.affiliation: Physikalisches Institut, Universität Würzburg, 97074 Würzburg, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Hofmann
authors.forename: X Y
authors.initials: XY
authors.lastname: Cui
authors.forename: J
authors.initials: J
authors.lastname: Schäfer
authors.forename: S
authors.initials: S
authors.lastname: Meyer
authors.forename: P
authors.initials: P
authors.lastname: Höpfner
authors.forename: C
authors.initials: C
authors.lastname: Blumenstein
authors.forename: M
authors.initials: M
authors.lastname: Paul
authors.forename: L
authors.initials: L
authors.lastname: Patthey
authors.forename: E
authors.initials: E
authors.lastname: Rotenberg
authors.forename: J
authors.initials: J
authors.lastname: Bünemann
authors.forename: F
authors.initials: F
authors.lastname: Gebhard
authors.forename: T
authors.initials: T
authors.lastname: Ohm
authors.forename: W
authors.initials: W
authors.lastname: Weber
authors.forename: R
authors.initials: R
authors.lastname: Claessen