Fig. 3: YMn2Ge2 as a topological Hund metal.
a DFT calculation of the bulk electronic structure in YMn2Ge2 with spin-orbit coupling and magnetism included. b DFT + DMFT calculation of the bulk electronic structure in YMn2Ge2. A clear renormalization of the bands near the Fermi level can be resolved compared with (a). c DFT + DMFT electronic band structure along A-Z-A direction. The black circle indicates the location of the nodal point. d, Experimental AFM nodal line along A-R direction (same as Fig. 1i). e DFT + DMFT band structure showing an excellent agreement with (d). The two blue dashed lines confirm the consistency of DFT + DMFT and ARPES data, especially at the R and A points.
