title: Effect of 3d doping on the electronic structure of BaFe2As2.
abstract: The electronic structure of BaFe(2)As(2) doped with Co, Ni and Cu has been studied by a variety of experimental and theoretical methods, but a clear picture of the dopant 3d states has not yet emerged. Herein we provide experimental evidence of the distribution of Co, Ni and Cu 3d states in the valence band. We conclude that the Co and Ni 3d states provide additional free carriers to the Fermi level, while the Cu 3d states are found at the bottom of the valence band in a localized 3d(10) shell. These findings help shed light on why superconductivity can occur in BaFe(2)As(2) doped with Co and Ni but not Cu.
authors.affiliation: Department of Physics and Engineering Physics, University of Saskatchewan, Saskatoon, SK, Canada. john.mcleod@usask.ca
authors.forename: J A
authors.initials: JA
authors.lastname: McLeod
authors.forename: A
authors.initials: A
authors.lastname: Buling
authors.forename: R J
authors.initials: RJ
authors.lastname: Green
authors.forename: T D
authors.initials: TD
authors.lastname: Boyko
authors.forename: N A
authors.initials: NA
authors.lastname: Skorikov
authors.forename: E Z
authors.initials: EZ
authors.lastname: Kurmaev
authors.forename: M
authors.initials: M
authors.lastname: Neumann
authors.forename: L D
authors.initials: LD
authors.lastname: Finkelstein
authors.forename: N
authors.initials: N
authors.lastname: Ni
authors.forename: A
authors.initials: A
authors.lastname: Thaler
authors.forename: S L
authors.initials: SL
authors.lastname: Bud'ko
authors.forename: P C
authors.initials: PC
authors.lastname: Canfield
authors.forename: A
authors.initials: A
authors.lastname: Moewes
mesh_terms: D001151:Arsenic / Q000737:chemistry*; D017609:Barium Compounds / Q000737:chemistry*; D003198:Computer Simulation; D004553:Electric Conductivity; D004579:Electron Transport; D005290:Ferric Compounds / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular
chemical_list: D017609:Barium Compounds; D005290:Ferric Compounds; C016258:barium ferrite; D001151:Arsenic