Fermi Surfaces

You can access the Fermi surface associated to a given dataset with .S.fat_sel(eV=0), .S.fat_sel(eV=0, eV_width=0.05) or S.fat_sel(widths={eV: 0.05}, eV=0), which will give the Fermi surface integrated in a reasonable range (50 millivolts) of the chemical potential.

You can use this to rapidly plot Fermi surfaces

Making a Fermi surface manually

Alternatively, you can use arpes.plotting.dispersion.labeled_fermi_surface to get a Fermi surface that optionally includes the labeled high symmetry points.

A labeled Fermi surface

You can also add annotations manually.