Fig. 1: Schematics of our theoretical model.
From: Topological flat bands in a kagome lattice multiorbital system
a Kagome lattice with three sublattices, labeled 1, 2, and 3. The two arrows are lattice translation vectors a1,2. b Local orbitals a = yz and b = xz. Colored ellipsoids indicate regions of electron wave functions, where the sign is positive. c Nearest-neighbor hopping integrals. yz(xz) orbitals between site 1 and site 2 are hybridized via diagonal hopping tδ(π), i.e., δ(π) bonding. Other hopping integrals between site 2 and site 3 and between site 1 and site 3 are obtained via the Slater rule56 as shown in the Methods section.
