The orbital characters of bands in iron-based superconductor BaFe1.85Co0.15As2

Authors:
  • LYL. X. Yang
    L. X. Yang
  • WTW. F. Tsai
    W. F. Tsai
  • GCG. H. Cao
    G. H. Cao
  • ZXZ. A. Xu
    Z. A. Xu
Preprint
Publisher website
Google Scholar
Abstract
Multiple 3d orbitals contribute to the low energy electronic structure in the newly discovered iron-based superconductors. The specific orbital characters of the multi-bands are crucial for constructing microscopic models. We here report strong polarization dependence of the angle-resolved photoemission spectra of BaFe1.85Co0.15As2. Our analysis identifies the orbital characters of the low lying electronic structure to be quite different from the existing calculations.