Fig. 2: Bogoliubov QPI near optimal doping.
From: Emergent normal fluid in the superconducting ground state of overdoped cuprates

a–c FT of the conductance ratio map Z(q, 6 mV) on the UD-20K, OP-32K and OD-28K samples, respectively. The seven arrows indicate the dominant wavevectors, which are consistent with the octet model for Bogoliubov QPI with d-wave symmetry. The yellow circles display the Bragg wavevector and the white lines indicate the Brillouin zone boundaries. d Schematic diagram of the octet model with seven scattering wavevectors.