Phenomenological model for the normal-state angle-resolved photoemission spectroscopy line shapes of high-temperature superconductors.
Providing a full theoretical description of the single-particle spectral function observed for high-temperature superconductors in the normal state is an important goal, yet unrealized. Here, we present a phenomenological model approaching towards this goal. The model results from implementing key phenomenological improvement in the so-called extremely correlated Fermi-liquid model. The model successfully describes the dichotomy of the spectral function as functions of momentum and energy and fits data for different materials (Bi2Sr2CaCu2O8+δ and La2-xSrxCuO4), with an identical set of intrinsic parameters. The current analysis goes well beyond the prevalent analysis of the spectral function as a function of momentum alone.
Department of Physics, University of California, Santa Cruz, California 95064, USA.
Kazue
K
Matsuyama
Department of Physics, University of California, Santa Cruz, California 95064, USA.
G-H
GH
Gweon