A single crystal study of Kagome metals U\(_2\)Mn\(_3\)Ge and U\(_2\)Fe\(_3\)Ge

Single crystals of U\(_2\)Mn\(_3\)Ge and and U\(_2\)Fe\(_3\)Ge with a Kagome lattice structure were synthesized using a high-temperature self-flux crystal growth method. The physical properties of these crystals were characterized through measurements of resistivity, magnetism, and specific heat. U\(_2\)Fe\(_3\)Ge exhibits ferromagnetic ground state and Anomalous Hall Effect, and U\(_2\)Mn\(_3\)Ge demonstrates a complex magnetic structure. Both compounds exhibit large Sommerfeld coefficient, indicating coexistence of heavy Fermion behavior with magnetism. Our results suggest that this U\(_2\)TM\(_3\)Ge (TM = Mn, Fe, Co) family is a promising platform to investigate the interplay of magnetism, Kondo physics and the Kagome lattice.