Journal
APPLIED PHYSICS LETTERS
Volume 115, Issue 7, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5111792
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Funding
- Gordon and Betty Moore Foundation EPiQS Initiative [GBMF3848]
- ARO [W911NF-16-1-0034]
- STC Center for Integrated Quantum Materials, NSF [DMR-1231319]
- Tsinghua Education Foundation
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FeSn is a room-temperature antiferromagnet expected to host Dirac fermions in its electronic structure. The interplay of the 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 reports 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 SrTiO3 (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(300K)/rho xx(2K)=24 and antiferromagnetic ordering at TN=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.
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