Fig. 1. Skew scattering mechanisms, basic ARPES, and transport characteristics of KV₃Sb₅.

(A) Schematic representation of three different skew scattering mechanisms, including clean ferromagnetic (FM) model, Kondo model, and spin cluster model. (B) Left: Experimentally measured Fermi surface of KV₃Sb₅. The hexagonal Brillouin zone is marked by the red line. Middle: DFT-calculated Fermi surface. Right: Band dispersion along K-Γ-K direction overlayed with the ARPES measurement. (C) Temperature dependence of longitudinal resistivity in zero field and in a field of 14 T. The inset on the top left shows the temperature dependence of differential longitudinal resistivity in zero field, in which a kink at 80 K corresponds to the magnetic transition. The inset on the bottom right shows the crystal structure of KV₃Sb₅ and its Kagome lattice. The Residual Resistivity Ratio (RRR) of the sample is 45. (D) MR measured at various temperatures, exhibiting linear field dependence below 3 T and quadratic field dependence at higher field (inset). (E) Extracted FFT frequency showing two identifiable periods of 34.6 and 148.9 T. The inset shows the Lifshitz-Kosevich fit of the 34.6 T orbit with an extracted effective mass of 0.125 m_e.