2008/06/24 by Walid Malaeb, Teppei Yoshida, Takashi Kataoka +10 · 82 citations
Engineering · Materials Science · Physics and Astronomy · #Electron #Electronic and Structural Properties of Oxides #Electronic correlation #Electronic structure #Fermi level #Iron-based superconductors research #Line (geometry) #Photoemission spectroscopy #Renormalization #SAS software applications and methods #Spectral line #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1143/jpsj.77.093714
published in Journal of the Physical Society of Japan 77(9), 093714 (Physical Society of Japan) · 4 pages, 5 figures
arxiv created 2008/06/24 · openalex publication_date 2008/09/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Photoemission spectroscopy is used to investigate the electronic structure of the newly discovered iron-based superconductors LaFeAsO1-xFx and LaFePO1-xFx. Line shapes of the Fe 2p core-level spectra suggest an itinerant character of Fe 3d electrons. The valence-band spectra are generally consistent with band-structure calculations except for the shifts of Fe 3d-derived peaks toward the Fermi level. From spectra taken in the Fe 3p -> 3d core-absorption region, we have obtained the experimental Fe 3d partial density of states, and explained it in terms of a band-structure calculation with a phenomenological self-energy correction, yielding a mass renormalization factor of ~< 2.