Fig. 6: Second neighbor hopping matrices.
From: Topological flat bands in a kagome lattice multiorbital system
yz(xz) orbitals between site 1 and site 2 are hybridized via diagonal hopping \({t}_{\pi (\delta )}^{(2)}\), i.e., π(δ) bonding. Other hopping integrals between site 1 and site 3 and between site 2 and site 3 are given by \({\hat{t}}_{{{{{{{{\bf{1\,3}}}}}}}}}^{(2)}\) and \({\hat{t}}_{{{{{{{{\bf{2\,3}}}}}}}}}^{(2)}\), respectively, obtained via the Slater rule56.
