Extended Data Fig. 4: Preliminary experimental data analysis.
From: Imaging the energy gap modulations of the cuprate pair-density-wave state

a, c, Preliminary Δ(r) independently measured at 4.2 K on different pieces of nearly optimally doped Bi2Sr2CaCu2O8+δ. b, d, The magnitude of Fourier transform of Δ(r) in a and c, respectively, representing early observations of 1/8 peaks marked by the red circles.