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Electron-doping Evolution of the Quasiparticle Band of the Cuprates

In: High Performance Computing in Science and Engineering’ 04

Author

Listed:
  • C. Dahnken

    (Universität Würzburg, Lehrstuhl für Theoretische Physik I)

  • M. Potthoff

    (Universität Würzburg, Lehrstuhl für Theoretische Physik I)

  • E. Arrigoni

    (Universität Würzburg, Lehrstuhl für Theoretische Physik I)

  • W. Hanke

    (Universität Würzburg, Lehrstuhl für Theoretische Physik I)

Abstract

We present a numerical study of the doping dependence of the spectral function of the n-type cuprates. Using cluster-perturbation theory and the self-energy-functional approach, we calculate the spectral function of the Hubbard model with next-nearest neighbor electronic hopping amplitude t′ = −0.35t and on-site interaction U = 8t at half filling and doping levels ranging from x = 0.077 to x = 0.20. We show that a comprehensive description of the single particle spectrum of the electron doped cuprates is only possible within a strongly correlated model. Weak coupling approaches that are based upon a collapse of the Mott gap by vanishing on-site interaction U are ruled out.

Suggested Citation

  • C. Dahnken & M. Potthoff & E. Arrigoni & W. Hanke, 2005. "Electron-doping Evolution of the Quasiparticle Band of the Cuprates," Springer Books, in: Egon Krause & Willi Jäger & Michael Resch (ed.), High Performance Computing in Science and Engineering’ 04, pages 141-151, Springer.
    • Handle: RePEc:spr:sprchp:978-3-540-26589-4_15
    DOI: 10.1007/3-540-26589-9_15
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