A single crystal study of Kagome metals U${}_2$Mn${}_3$Ge and U${}_2$Fe${}_3$Ge

Abstract

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.

Accepted to Journal of Physics: Condensed Matter