Observation of multiple flat bands and Van-Hove singularities in the distorted Kagome metal NdTi₃Bi₄

The unique behaviors observed in Kagome lattice systems, such as charge density waves, unconventional superconductivity, and the anomalous Hall effect, are closely tied to the precise energetic alignment of flat bands, Dirac nodes, and Van Hove singularities. These features play a critical role in determining the electronic and magnetic properties of the material. Motivated by this connection, we present a detailed investigation of the electronic structure of a new distorted Kagome metal, NdTi₃Bi₄, using angle-resolved photoemission spectroscopy and density functional theory calculations. This work reveals the presence of two flat bands originating from Ti d_xy and d_x²_-y² orbitals, joined by multiple Van Hove singularities, one of which lies near the Fermi level. We also detect linear Dirac-like states at the K point, with the nodal point positioned close to the Fermi level. These findings establish NdTi₃Bi₄ as a promising platform for exploring the influence of electronic structure on topological physics and many-body instabilities.