Electric field-tuned topological transition in 2D Kagome ScV₆Sn₆

We explore the topological properties of the 2D Kagome ScV₆Sn₆, revealing a nontrivial topological phase characterized by a Chern number (|C| = 1) at the Fermi energy, driven by an intrinsic anomalous Hall effect (257 Ω⁻¹cm⁻¹), Berry curvature, and strong spin-orbit coupling. We demonstrate the tunability of this topological state, where an electric field of 0.4 eV/Å induces a transition from a topological semimetal to a trivial metallic phase, leading to the disappearance of gapless edge states. These findings establish ScV₆Sn₆ as a key 2D-based Kagome material, with strong potential for modulating topological phases in a d-orbital-dominated structure.