A Theoretical Approach to Pseudogap and Superconducting Transitions in Hole-Doped Cuprates
Figure 14
(a) The contour plot of the density , where the subscript “” stands for the conduction band, on the first BZ for the SC phase at 60 K. The gap amplitude . (b) The contour plot of the density on the first BZ for the PG phase at 120 K. The gap amplitude . There is considerable depletion of the spectral weight density available for pairing in the antinodal region of momentum space in the PG phase compared to the SC phase as could be inferred from the shrinkage of the hot region. (c) A 2D plot of at K as a function of energy in units of the first neighbor hopping. The integral is a decreasing function for energy larger than that corresponding to the gap amplitude.
