论文标题
应变介导的磁电电耦合中的异常内磁各向异性
Anomalous In-plane Magnetic Anisotropy in Strain-mediated Converse Magnetoelectric Coupling
论文作者
论文摘要
铁磁（FM）层中的磁轴旋转（MAR）对于应变介导的匡威磁电耦合至关重要。使用密度功能理论（DFT），我们在计算中研究选定变形的FM材料（例如人体中心铁）的磁各向异性。结果表明，在高平面应变差异上，短轴比以前在现象学上预测的更能有力。这种异常趋势和在不同应变条件下的复杂能量行为解释了为什么自旋晶格动力学（SLD）模拟不会产生平面内MAR，并暗示不同能量项之间的耦合以及高阶系数的贡献。
Magnetic axis rotation (MAR) in ferromagnetic (FM) layers is crucial for strain-mediated converse magnetoelectric coupling. Employing the density functional theory (DFT), we computationally study the magnetic anisotropy of selected deformed FM materials such as body-centered iron. The results show that the short axis is more energy-favorable at high in-plane strain difference than previously predicted phenomenologically. This anomalous trend and the complex energy behaviors at different strain conditions explain why spin-lattice dynamics (SLD) simulation does not produce in-plane MAR and imply couplings between different energy terms together with high order coefficient contributions.
