Figure 7. Coherent-incoherent crossover at x = 0: role of VHS nesting.

Deconvolution of the susceptibility, , for k-states in the (π, 0)-patch at several temperatures T. Contribution to the susceptibility of χ_0,2(q, _k), Eq. 4, is plotted along q-cuts near (π, π) with the color scale ranging from white for a large contribution to blue for negligible contribution for: T = 0 (a), 25 K (b), 50 K (c), 250 K (d), 500 K (e), and 2000 K (f). Frame (g) illustrates scattering from the VHS at E_k (green dotted line) to states centered at the Fermi level at E_k+q. The colored region shows where Pauli blocking is ineffective at T = 25 (blue bar), 50 (black bar), 250 (green bar), 500 (red bar), and 2000 K (yellow bar).