a, b, Surface Fermi arcs and projection of the bulk Fermi surfaces (FSs). Whereas the Fermi surfaces are separate and carry topologically quantized Berry curvatures in a, they merge into a single Fermi surface in b. Still, parts of the surface Fermi arcs remain well defined because the bulk is gapped at these surface wavevectors. c, Local DOS (colour scale) in the y–z cross-section of the Weyl semimetal lattice model with a slab geometry and a magnetic field at cyclotron resonance. The Fermi energy μ = 1.05 > 1.0 is beyond the Lifshitz transition in the bulk, yet we still observe clear signatures of the Weyl orbits consisting of both surface and bulk components.