论文标题
dy $^{3+} $和fe $^{3+}的磁性顺序
Magnetic order of Dy$^{3+}$ and Fe$^{3+}$ moments in antiferromagnetic DyFeO$_{3}$ probed by spin Hall magnetoresistance and spin Seebeck effect
论文作者
论文摘要
我们报告了稀有地球抗铁磁铁的单晶（SMR）和自旋Seebeck效果（SSE），并带有薄薄的PT膜触点。 SMR在升高温度下的角形和对称性反映了由Zeeman Energy，磁晶型和dzyaloshinskii-Moriya相互作用所支配的Fe $^{3+} $矩的抗磁磁性。我们将观察到的信号对磁场强度的线性依赖性解释为磁场诱导的Dy $^{3+} $矩的磁场顺序，直到室温为止。在50 $ \，$ k的Morin温度下，SMR监测了Fe $^{3+} $ spins的自旋晶体偏换相变。低于23 $ \，$ k，出现的其他功能持续到低于4 $ \，$ k，dy $^{3+} $磁性sublattice的订购温度。我们得出结论，SMR和SSE的组合是研究旋转重新定向相变和sublattice磁化的简单有效工具。
We report on spin Hall magnetoresistance (SMR) and spin Seebeck effect (SSE) in single crystal of the rare-earth antiferromagnet DyFeO$_{3}$ with a thin Pt film contact. The angular shape and symmetry of the SMR at elevated temperatures reflect the antiferromagnetic order of the Fe$^{3+}$ moments as governed by the Zeeman energy, the magnetocrystalline anisotropy and the Dzyaloshinskii-Moriya interaction. We interpret the observed linear dependence of the signal on the magnetic field strength as evidence for field-induced order of the Dy$^{3+}$ moments up to room temperature. At and below the Morin temperature of 50$\,$K, the SMR monitors the spin-reorientation phase transition of Fe$^{3+}$ spins. Below 23$\,$K, additional features emerge that persist below 4$\,$K, the ordering temperature of the Dy$^{3+}$ magnetic sublattice. We conclude that the combination of SMR and SSE is a simple and efficient tool to study spin reorientation phase transitions and sublattice magnetizations.
