Fermi Arcs

Open Fermi surface arcs connecting projected Weyl point chiralities — topological surface states of Weyl semimetals

0.9
0.5
2
0
Weyl semimetals (TaAs, NbAs, WTe₂) host bulk Weyl nodes as monopoles/antimonopoles of Berry curvature (chirality ±1). Fermi arcs on the surface connect projections of opposite chirality — topologically required by bulk-boundary correspondence.