Epitaxial Growth and Domain Structure Imaging of Kagome Magnet Fe${}_3$Sn${}_2$

Abstract

Magnetic materials with kagome crystal structure exhibit rich physics such as frustrated magnetism, skyrmion formation, topological flat bands, and Dirac/Weyl points. Until recently, most studies on kagome magnets have been performed on bulk crystals or polycrystalline films. Here we report the synthesis of high-quality epitaxial films of topological kagome magnet Fe${}_3$Sn${}_2$ by atomic layer molecular beam epitaxy. Structural and magnetic characterization of Fe${}_3$Sn${}_2$ on epitaxial Pt(111) identifies highly ordered films with c-plane orientation and an in-plane magnetic easy axis. Studies of the local magnetic structure by anomalous Nernst effect imaging reveals in-plane oriented micrometer size domains. The realization of high-quality films by atomic layer molecular beam epitaxy opens the door to explore the rich physics of this system and investigate novel spintronic phenomena by interfacing Fe${}_3$Sn${}_2$ with other materials.

6 pages, 5 figures

References in corpus (5)

• Advances in the Physics of Magnetic Skyrmions and Perspective for Technology
• Topological Weyl semimetals in the chiral antiferromagnetic materials Mn3Ge and Mn3Sn
• Imaging and writing magnetic domains in the non-collinear antiferromagnet Mn${}_{\text{3}}$Sn
• Anomalous and topological Hall effects in epitaxial thin films of the noncollinear antiferromagnet Mn${}_3$Sn
• Molecular Beam Epitaxy Growth of Antiferromagnetic Kagome Metal FeSn