Effect of 3d doping on the electronic structure of BaFe2As2

TitleEffect of 3d doping on the electronic structure of BaFe2As2
Publication TypeJournal Article
Year of Publication2012
AuthorsMcLeod JA, Buling A, Green RJ, Boyko TD, Skorikov NA, Kurmaev EZ, Neumann M, Finkelstein LD, Ni N, Thaler A, Bud'ko SL, Canfield PC, Moewes A
Journal TitleJournal of Physics-Condensed Matter
Volume24
Pages215501
Date Published05
Type of ArticleArticle
ISBN Number0953-8984
Accession NumberWOS:000303985800013
Keywordsbeamline, light-source, ray-emission-spectra
Abstract

The electronic structure of BaFe2As2 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 BaFe2As2 doped with Co and Ni but not Cu.

URL<Go to ISI>://WOS:000303985800013
DOI10.1088/0953-8984/24/21/215501
Alternate JournalJ. Phys.-Condes. Matter