Seminar By Robert McQueeney, Iowa State University

Title: Magnetism of the RT₆Sn₆ kagome metals

Series: Condensed Matter Sciences Seminar

Host: Mykhailo Shatruk

Abstract: Kagome metals are known for their unique electronic band structure containing flat bands and Dirac cones with topological character. This has elevated interest in kagome metals as an adaptable system to study the interplay of band topology with superconducAvity, iAnerant magneAsm, and other charge instabiliAes that are driven by electronic correlaAons. In the RT6Sn6 kagome metals, conducAon electrons within T=V, Mn kagome layers interact with the local magneAc moments of interleaved rare-earth (R) triangular layers. Here, I will describe experimental neutron scaLering and high-field magneAzaAon data outlining the compeAng magneAc interacAons and magneAc fluctuaAons that lead to a variety of collinear and noncollinear magneAc phases when T=Mn. I will also discuss the discovery of strong Ising ferromagneAsm in TbV6Sn6 and the search for potenAal transverse field quantum criAcality.