Speaker
Description
Kagome lattice systems host Dirac dispersions, flat bands, and van Hove singularities near the Fermi level, making them a model setting for correlated electronic behavior. Here, we present an angle-resolved photoemission spectroscopy (ARPES) study of kagome 166 compounds, including LuFe6Ge6, LuCr6Ge6, HoCr6Ge6, and ScNi6Ge6, most of which have not been previously investigated by ARPES. We resolve kagome-derived electronic states characterized by Dirac-like dispersions, flat band features, and saddle points in close proximity to the Fermi energy. While these materials share a common band structure framework, systematic variations in band filling and exchange splitting lead to distinct Fermi-surface topologies and tunable proximity to van Hove singularities. These results highlight kagome 166 systems as a platform for investigating the interplay between lattice geometry, magnetism, and electronic instabilities.