Missing Magnetism in Sr₄Ru₃O₁₀: Indication for Antisymmetric Exchange Interaction

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Missing Magnetism in Sr₄Ru₃O₁₀: Indication for Antisymmetric Exchange Interaction

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Title: Missing Magnetism in Sr₄Ru₃O₁₀: Indication for Antisymmetric Exchange Interaction
Author(s):
Weickert, Franziska;
Civale, Leonardo;
Maiorov, Boris;
Jaime, Marcelo;
Salamon, Myron B.;
Carleschi, Emanuela;
Strydom, Andre M.;
Fittipaldi, Rosalba;
Granata, Veronica;
Vecchione, Antonio
Date Created: 2017-06-20
Item Type: article
Keywords: Ferromagnetism
Crystals
Anisotropy
Magnetic crystals
Abstract: Metamagnetism occuring inside a ferromagnetic phase is peculiar. Therefore, Sr₄Ru₃O₁₀, a T_C = 105 K ferromagnet, has attracted much attention in recent years, because it develops a pronounced metamagnetic anomaly below T_C for magnetic fields applied in the crystallographic ab-plane. The metamagnetic transition moves to higher fields for lower temperatures and splits into a double anomaly at critical fields H_{c1} = 2.3 T and H_{c2} = 2.8 T, respectively. Here, we report a detailed study of the different components of the magnetization vector as a function of temperature, applied magnetic field, and varying angle in Sr₄Ru₃O₁₀. We discover for the first time a reduction of the magnetic moment in the plane of rotation at the metamagnetic transition. The anomaly shifts to higher fields by rotating the field from H ⟂ c to H ∥ c. We compare our experimental findings with numerical simulations based on spin reorientation models taking into account magnetocrystalline anisotropy, Zeeman effect and antisymmetric exchange interactions. While Magnetocrystalline anisotropy combined with a Zeeman term are sufficient to explain a metamagnetic transition in Sr₄Ru₃O₁₀, a Dzyaloshinskii-Moriya term is crucial to account for the reduction of the magnetic moment as observed in the experiments.
Publisher: Nature Publishing Group
ISSN: 2045-2322
Source: Scientific Reports
Link to Related Resource: http://dx.doi.org/10.1038/s41598-017-03648-2
Persistent Link: http://hdl.handle.net/10735.1/6107
Bibliographic Citation: Weickert, Franziska, Leonardo Civale, Boris Maiorov, Marcelo Jaime, et al. 2017. "Missing magnetism in Sr₄Ru₃O₁₀: Indication for antisymmetric exchange interaction." Scientific Reports 7(1), doi:10.1038/s41598-017-03648-2
Terms of Use: CC BY 4.0 (Attribution)
©2017 The Authors
Sponsors: National Science Foundation, Division of Material Research under Grant NSF-DMR-1157490.

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CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)