Molecular Beam Epitaxy Growth of Antiferromagnetic Kagome Metal FeSn

Abstract

FeSn is a room-temperature antiferromagnet expected to host Dirac fermions in its electronic structure. The interplay of magnetic degree of freedom and the Dirac fermions makes FeSn an attractive platform for spintronics and electronic devices. While stabilization of thin film FeSn is needed for the development of such devices, there exist no previous report of epitaxial growth of single crystalline FeSn. Here we report the realization of epitaxial thin films of FeSn (001) grown by molecular beam epitaxy on single crystal SrTiO${}_3$ (111) substrates. By combining X-ray diffraction, electrical transport, and torque magnetometry measurements, we demonstrate the high quality of these films with the residual resistivity ratio ${\rho }_{xx}(300\mathrm{K})/{\rho }_{xx}(2\mathrm{K})=24$ and antiferromagnetic ordering at $T_{\mathrm{N}}$ = 353 K. These developments open a pathway to manipulate the Dirac fermions in FeSn by both magnetic interactions and the electronic field effect for use in antiferromagnetic spintronics devices.

References in corpus (10)

• High temperature fractional quantum Hall states
• Massive Dirac fermions in a ferromagnetic kagome metal
• Negative flat band magnetism in a spin-orbit coupled correlated kagome magnet
• Giant and anisotropic many-body spin-orbit tunability in a strongly correlated kagome magnet
• Theoretical prediction of a strongly correlated Dirac metal
• Field-enhanced diamagnetism in intense magnetic field in the pseudogap state of the cuprate $\rm Bi_2Sr_2CaCu_2O_{8+δ}
• Preparation of atomically-flat SrTiO3 surfaces using a deionized-water etching and thermal annealing procedure
• Surface properties of atomically flat poly-crystalline SrTiO3
• Route Towards Dirac and Weyl Antiferromagnetic Spintronics
• Fe-Sn nanocrystalline films for flexible magnetic sensors with high thermal stability

Cited by in corpus (15)

• Topological kagome magnets and superconductors
• Experimental evidence for Berry curvature multipoles in antiferromagnets
• Large anomalous Hall effect in single crystals of the kagome Weyl ferromagnet Fe${}_3$Sn
• Molecular beam epitaxy of the magnetic kagome metal FeSn on LaAlO3 (111)
• Atomic Layer Epitaxy of Kagome Magnet Fe${}_3$Sn${}_2$ and Sn-modulated Heterostructures
• How correlations change the magnetic structure factor of the kagome Hubbard model
• Visualizing symmetry-breaking electronic orders in epitaxial Kagome magnet FeSn films
• FeGe as a building block for the kagome 1:1, 1:6:6, and 1:3:5 families: hidden d-orbital decoupling of flat band sectors, effective models and interaction Hamiltonians
• Kagome metals
• Persistent flat band splitting and strong selective band renormalization in a kagome magnet thin film
• High quality epitaxial thin films and exchange bias of antiferromagnetic Dirac semimetal FeSn
• Chiral symmetry breaking through spontaneous dimerization in kagomé metals
• Reactivity of ultra-thin Kagome Metal FeSn towards Oxygen and Water
• Anomalous magnetoresistance in an antiferromagnetic Kagome semimetal heterostructures
• Epitaxial Growth and Domain Structure Imaging of Kagome Magnet Fe${}_3$Sn${}_2$