1999/10/31 by J. Mesot, Mohit Randeria, M. Randeria +19 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Angle-resolved photoemission spectroscopy #Brillouin zone #Condensed matter physics #Electronic structure #Fermi surface #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Quasiparticle #Superconductivity #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.63.224516
published as Phys. Rev. B 63, 224516 (2001) · Expanded discussion of symmetrization method in Section 5, figures remain the same
arxiv created 2001/02/22 · openalex publication_date 2001/05/23 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the normal-state electronic excitations probed by angle-resolved photoemission spectroscopy (ARPES) in Bi1.6Pb0.4Sr2CuO6 (Bi2201) and Bi2Sr2CaCu2O_8+\ensuremathδ (Bi2212). Our main goal is to establish explicit criteria for determining the Fermi surface from ARPES data on strongly interacting systems where sharply defined quasiparticles do not exist and the dispersion is very weak in parts of the Brillouin zone. Additional complications arise from strong matrix element variations within the zone. We present detailed results as a function of incident photon energy, and show simple experimental tests to distinguish between an intensity drop due to matrix element effects and spectral weight loss due to a Fermi crossing. We reiterate the use of polarization selection rules in disentangling the effect of umklapps due to the BiO superlattice in Bi2212. We conclude that, despite all the complications, the Fermi surface can be determined unambiguously; it is a single large hole barrel centered about (\ensuremathπ,\ensuremathπ) in both materials.