Browsing by Author "Fittipaldi, Rosalba"
Now showing 1 - 1 of 1
- Results Per Page
- Sort Options
Item Missing Magnetism in Sr₄Ru₃O₁₀: Indication for Antisymmetric Exchange Interaction(Nature Publishing Group, 2018-09-24) Weickert, Franziska; Civale, Leonardo; Maiorov, Boris; Jaime, Marcelo; Salamon, Myron B.; Carleschi, Emanuela; Strydom, Andre M.; Fittipaldi, Rosalba; Granata, Veronica; Vecchione, Antonio; Salamon, Myron B.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.