Journal
PHYSICAL REVIEW B
Volume 76, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.76.012502
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Spectral functions are evaluated numerically within the t-t(')-J model as relevant for electron-doped cuprates. The Fermi surface develops from a pocketlike 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 a 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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