Scanning Tunneling Microscopy Study of Fe₃Sn₂

The peculiar geometry of the Kagome lattice, composed of corner-sharing triangles, has been known to be a fertile ground for exotic quantum phases since theory predicts the possible coexistence of topological and frustrated magnetic states stemming from this structure. The recently rediscovered metallic ferromagnet Fe₃Sn₂, consisting of two kagome bilayers (Fe₃Sn) layers separated by a honeycomb Sn layer, is seemingly a good candidate to explore the interplay between frustrated magnetism and topological band structure due to recent reports which include the observation of massive dirac fermions and the anomalous Hall effect. In addition, it has also been reported that its electronic structure can be tuned by changing its magnetic moments or temperature, making it a viable candidate for spintronic applications. Here we present a scanning tunneling microscopy/spectroscopy study of Fe₃Sn₂ at low temperatures and under a magnetic field.