Example of 3D ARPES data: E_B, k_x, k_y 

3D rendition of superconducting kagome-metal CsV₃Sb₅ with coordinates k_x, k_y, and E_B. The intersection of the two lines (k_x = 0 and k_y = 0) is the gamma point. The electron binding energy sweeps down and then up again but stops at the Fermi energy. Then the momentum-distribution curves in the x- and y-directions are shown. Data courtesy of Yong Hu, Ming Shi, and Nicholas Plumb of the SIS beamline, Swiss Light Source. See: Y. Hu et al., Nature Communications http://dx.doi.org/10.1038/s41467-022-29828-x.