Dresden 2026 – scientific programme
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DS: Fachverband Dünne Schichten
DS 20: Poster
DS 20.17: Poster
Thursday, March 12, 2026, 18:30–20:30, P2
Structural and magnetic properties of epitaxial Fe-Sn thin films. — •Benedikt Eberts1, Franz Weidenhiller2, Matthias Küß1, Lin Chen2, Christian Back2, and Manfred Albrecht1 — 1Institute of Physics, University of Augsburg, 86135 Augsburg, Germany — 2Institute of Physics, University of Augsburg, 86135 Augsburg, Germany
Magnetic Weyl semimetals exhibit strong spin-orbit coupling and nontrivial band structures, enabling efficient field-free manipulation of magnetic states through spin-orbit torque [1], which makes them highly attractive for spintronic applications. Among them, the ferromagnetic Weyl semimetal Fe3Sn2 and the antiferromagnetic Dirac semimetal FeSn provide a good platform for investigating spin-orbit-driven phenomena. Both compounds crystallize in a layered Kagome lattice, where the corner-sharing triangles lead to strong frustration. In this work, we have grown high-quality epitaxial thin films of FeSn and Fe3Sn2. The films were deposited at elevated temperatures using magnetron sputtering. A seed layer system of Pt and Ru on Al2O3(0001) substrates was used to promote epitaxial growth. Thin films of varying thickness were prepared and characterized using XRD, AFM, MFM, SEM, TEM, and SQUID magnetometry. FMR measurements on Fe3Sn2 revealed low damping and the expected sixfold symmetry associated with the Kagome lattice. These thin films will next be used to study charge-spin conversion processes [2]. [1] Lyalin, I. et al., Nano Lett. 21, 6975-6982 (2021) [2] Zhang, S.-L. et al., Phys. Rev. Lett. 123, 187201 (2019)
Keywords: Magnetic Weyl semimetals; Epitaxial growth; spin Charge conversion; Ferromagnetic resonance; Kagome lattice