Pressure and magnetic field-induced phase transitions in rare-earth-based kagome magnets

Materials crystallizing with a Kagome lattice, whose atoms are arranged into layered sets of overlapping corner-sharing triangles, show breaking of time-reversal symmetry and potentially can, therefore, host novel correlated topological states. Among the several systems, the RMn₆Sn₆ (R = rare earth) compounds have shown several interesting physical properties, including Chern topological magnetism, and anomalous Hall effect [Phy. Rev Mat. 6, (2022) 064404). The electronic properties of such materials can be properly tuned with external stimuli such as temperature, pressure, and magnetic field, or by changing the chemistry of the crystal’s constituents. In this presentation, we will discuss both the effects of chemical and physical pressure and magnetic field effects on the magnetism and phase transition properties of the RMn₆Sn₆ phases, particularly focusing on both ternary and pseudo-ternary (RR’)Mn₆Sn₆.