Interplay between magnetism and charge density waves in toplogical semimetals

Rare earth tri-tellurides have recently received renewed interest, as they provide a materials platform in which charge density waves (CDWs) coexist with high mobility electrons and complex magnetism in a van der Waals material. Their closely related cousins, rare-earth di-tellurides, have received less attention. Those however can be hole doped if Sb is substituted for Te. This provides a way to adjust the Fermi level and tune the CDW wave vector. In this talk, I will give an overview and update about our work on both rare-earth tri-tellurides and di-tellurides. I will show how the magnetism interacts with the CDW and that the CDW can template spin density waves in these materials. I will also discuss how the transport of these materials is highly unusual, as ARPES experiments consistently confirm topological semimetal band structures, but these materials do not exhibit the typical TSM electronic properties.