Tuning magnetism in epitaxial FeSn

Kagome thin films provide an interesting platform to explore frustrated magnetism, topology, symmetry, and correlated states. By studying characteristically different but isostructural binary compounds such as FeSn and CoSn, we can then explore the evolution of magnetic changes which can affect the phenomena exhibited by these materials. Antiferromagnetic FeSn, when doped with Co, offers an avenue to tune the Néel vector from in-plane to out-of-plane. In this talk, we will report the epitaxial growth of 2D FeSn on SrTiO₃(111) substrates. We will also discuss the electronic structure of FeSn films as well as the effect of Co doping based on angle-resolved photoemission spectroscopy measurements, complemented by in-situ low temperature scanning tunneling microscopy/spectroscopy.