Figure 5: Band structures near Weyl nodes in TaAs and TaP.
From: Observation of Weyl nodes and Fermi arcs in tantalum phosphide

(a) The illustration of energy dispersions along cutx for W1 and W2 in TaAs. The Fermi surface encloses a single chiral Weyl node and the CFS is ±1. (b) Same as a but for TaP. The Fermi surface encloses two W2 Weyl nodes with opposite chirality and the CFS is zero.