Fermi surface and pseudogap in electron-doped cuprates

Details Fermi surface and pseudogap in electron-doped cuprates Fermi surface and pseudogap in electron-doped cuprates

2007-02-27

arxiv.org/abs/cond-mat/0702644v1

Phys. Rev. B 76, 012502 (2007)

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 5 figures

Scientific paper

Spectral functions are evaluated numerically within the t-t'-J model as relevant for electron-doped cuprates. The Fermi surface develops from a pocket-like into a large one with doping. The corresponding pseudogap in the nodal direction is well resolved at low doping and vanishes at intermediate doping. Its presence is strongly temperature dependent and thus connected to longer-range antiferromagnetic correlations. Features including double effective band and optical conductivity are consistent with experiments on electron-doped cuprates without invoking the closing of the Mott-Hubbard gap.

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