Extended Data Fig. 8: Distinguishing topological phases through ρxx(T) and σxx(T).
From: Synthesis of a semimetallic Weyl ferromagnet with point Fermi surface
a, Temperature dependence of the resistivity for a Chern insulating composition, similar to composition D (blue); semimetallic Weyl composition C (purple); and magnetic semiconductor at higher indium doping, z = 0.12 (orange). The Curie temperature for the Chern insulating composition is TC ≈ 55 K, obtained from the onset of the Hall resistivity (light blue). Composition C shows a similar TC. Notably, the Weyl composition C shows a marked metallic downturn in ρxx(T) below TC, whereas the Chern insulator film shows no notable feature around TC. The metallic downturn provides an extra signature of the emergence of a semimetallic Weyl state. b, σxx(T) for the same films, obtained from the resistivity.
