Fig. 2: Spectral function for undoped PNO.
From: Unconventional superconductivity without doping in infinite-layer nickelates under pressure
Panels a and c show the DMFT spectral function A(k, ω) (color scale) and the Wannier bands (white lines) along a path through the Brillouin zone at temperature T = 300K and a pressure of 0 and 50 GPa, respectively. Panels (b) and (d) show the same spectral function in the kz = 0 plane. A(kx, ky, kz = 0, ω = 0). The Γ point is at the center, i.e., (kx = 0, ky = 0).
