2008/06/03 by Jia Xiao-Wen, Xiaowen Jia, Haiyun Liu +46
Engineering · Materials Science · Physics and Astronomy · #Angle-resolved photoemission spectroscopy #Coherence (philosophical gambling strategy) #Electronic and Structural Properties of Oxides #Electronic structure #Fermi level #Iron-based superconductors research #Photoemission spectroscopy #Pseudogap #SAS software applications and methods #Superconductivity #Valence (chemistry) #cond-mat.supr-con
paper · pdf · doi:10.1088/0256-307x/25/10/067
published as Chinese Physics Letters 25(2008)3765 · 5 pages,4 figures
arxiv created 2008/06/03 · openalex publication_date 2008/10/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
High resolution photoemission measurements are carried out on non-superconducting LaFeAsO parent compound and various superconducting RFeAs(O 1-x F x ) (R=La, Ce and Pr) compounds. It is found that the parent LaFeAsO compound shows a metallic character. By extensive measurements, several common features are identified in the electronic structure of these Fe-based compounds: (1) 0.2 eV feature in the valence band, (2) a universal 13-16 meV feature, (3) near Ef spectral weight suppression with decreasing temperature. These universal features can provide important information about band structure, superconducting gap and pseudogap in these Fe-based materials.