Fig. 4: Smith-index semimetals mp-1238796 Rb(CrS2)2 with stable invariant η4I = 3.
From: High-throughput first-principle prediction of collinear magnetic topological materials
a The crystal structure and Brillouin zone. b The electronic structure with SOC. The red and blue colors denote the occupied and unoccupied bands, respectively. Panels c and d show the surface states at (001) and (100) surfaces. Rb(CrS2)2 contains four pairs of Weyl points around the Fermi level within the energy range of ±0.015 eV, which are marked as yellow dots in the E = EF constant energy plot in c. Two Weyl nodes with the same shape are related by inversion symmetry and reside at the same binding energy.
