Fig. 1: Crystal structure and DFT results for YbTi3Bi4.
From: Diverse electronic landscape of the kagome metal YbTi3Bi4
a Crystal structure of YbTi3Bi4 where the blue, red, and green solid spheres denote Yb, Ti, and Bi atoms, respectively. The crystal structure is orthorhombic (Fmmm) with a zig-zag sublattice of Yb atoms. b The kagome lattice, which is formed by the Ti atoms, c is slightly distorted and it is not coplanar. d A view of the structure perpendicular to the b–c plane, which highlights the relatively small out-of-plane distortion of about ( ~2°). e Zig-zag chain formed by the Yb atoms. f Bulk Brillouin zone (BZ) and its projection onto the (001) surface BZ; high-symmetry points are marked. g DFT-based energy bands along the various high-symmetry directions without the inclusion of spin–orbit coupling (SOC). h Same as (g) except that these results include SOC. Purple and black arrows in (g and h) point to vHSs and flat bands, respectively.
