Electron-doping Evolution of the Quasiparticle Band of the Cuprates

C. Dahnken (), M. Potthoff, E. Arrigoni and W. Hanke
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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

A chapter in High Performance Computing in Science and Engineering’ 05, 2006, pp 25-35 from Springer

Abstract: Summary 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.

Keywords: Fermi Surface; Spectral Function; Hubbard Model; Spectral Weight; Quantum Monte Carlo (search for similar items in EconPapers)
Date: 2006
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-540-29064-3_3

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DOI: 10.1007/3-540-29064-8_3

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