2001/11/20 by Thomas Maier, Th. A. Maier, Th. Pruschke +2 · 1 citation
Physics and Astronomy · #Angle-resolved photoemission spectroscopy #Brillouin zone #Condensed matter physics #Doping #Electronic structure #Fermi Gamma-ray Space Telescope #Fermi liquid theory #Fermi surface #Hubbard model #Luttinger liquid #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum and electron transport phenomena #Quantum mechanics #Quantum oscillations #Spectral line #Superconductivity #Topological Materials and Phenomena #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.66.075102
published as Phys. Rev. B 66, 075102 (2002) · 8 pages, 7 color figures, uses RevTeX 4
arxiv created 2001/11/20 · openalex publication_date 2002/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We discuss spectra calculated for the two-dimensional Hubbard model in the intermediate coupling regime with the dynamical cluster approximation, which is a nonperturbative approach. We find a crossover from a normal Fermi liquid with a Fermi surface closed around the Brillouin-zone center at large doping to a non-Fermi liquid for small doping where the Fermi surface is holelike, closed around M=(\ensuremathπ,\ensuremathπ). The topology of the Fermi surface at low doping indicates a violation of Luttinger's theorem. We discuss different ways of presenting the spectral data to extract information about the Fermi surface. A comparison to recent experiments is presented.