Fig. 3: The evolution of ordering instabilities with hole concentration in non-magnetic LaNiO2.
Momentum dependence of the maximum instability \({{{\Lambda }}}_{F}^{0}({{{{{{{\bf{q}}}}}}}},\omega =0)\) in the Γ and Z planes of the Brillouin zone, along with the corresponding density of instabilities of LaNiO2 in the non-magnetic phase for various hole dopings. Red and blue “x” marks identify the critical and sub-critical instability momenta Q*, respectively. The black dashed line denotes the boundary of the Brillouin zone. The color bars indicate the instability strength. The two Van Hove singularities and the step-edge are indicated by Roman numerals \({\mathbb{I}}\), \({\mathbb{II}}\), and \({\mathbb{III}}\).
