2004/03/31 by Tanja Cuk, T. Cuk, F. Baumberger +16 · 10 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Iron-based superconductors research #Physics of Superconductivity and Magnetism #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.93.117003
published as Phys. Rev. Lett. 94, 117003 (2004) · 4 Pages, 4 Figures Updated Figures and Text
arxiv created 2004/06/23 · openalex publication_date 2004/09/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/06/11
Angle-resolved photoemission spectroscopy on optimally doped Bi2Sr2Ca0.92Y0.08Cu2O_8+\ensuremathδ uncovers a coupling of the electronic bands to a 40 meV mode in an extended k-space region away from the nodal direction, leading to a new interpretation of the strong renormalization of the electronic structure seen in Bi2212. Phenomenological agreements with neutron and Raman experiments suggest that this mode is the B1g oxygen bond-buckling phonon. A theoretical calculation based on this assignment reproduces the electronic renormalization seen in the data.