Model of d-wave electron pairing in hole doped cuprate superconductors: A possible explanation for the pseudogap regime

Details Model of d-wave electron pairing in hole doped cuprate superconductors: A possible explanation for the pseudogap regime Model of d-wave electron pairing in hole doped cuprate superconductors: A possible explanation for the pseudogap regime

2010-07-20

arxiv.org/abs/1007.3536v1

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 5 figures, submitted to PRL

Scientific paper

The real-space localized hole pair is constructed in the Cu-O plane of the hole-doped cuprate superconductors. We prove analytically and numerically that two electrons, due to the nearest-neighbor Coulomb repulsive confinement effect, can be in pairing inside a single plaquette with the d-wave symmetry. The scenario supports the `no glue' pairing picture for the cuprates. Based on the scenarios, the physical origin of the Fermi pocket (or Fermi arc) and the two pseudogap behavior are provided. Our framework leads directly to a unified linear relationship between the pseudogap temperature T* and the hole doping level x in these compounds.

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