易平面三角磁体中的面内反常和三次谐波霍尔响应
In-plane anomalous and third-harmonic Hall response in an easy-plane trigonal magnet
- Indian Institute of Technology Kanpur（坎普尔印度理工学院）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
通过调节磁各向异性，在易平面三角磁体中实现面内反常霍尔效应和三次谐波响应，揭示各向异性与晶体对称性控制的高阶非线性输运机制。
AI中文摘要：
我们报道了通过调节磁各向异性，在易平面三角磁系统中出现面内反常霍尔效应（IPAHE）和显著的三次谐波霍尔响应。角度依赖的霍尔测量揭示了与传统正弦行为的明显偏离，在高场下显示出强的sin(3θ)分量，该分量随磁各向异性的减小而增强，并伴随有限的面内霍尔信号。一致地，观察到的非线性霍尔信号表现出三次方场依赖，表明横向电导率中存在领先的三阶贡献。三次谐波的增强反映了向相干面内磁化和对称性控制的非线性输运的演变。这些观察支持了一种由降低的磁各向异性实现的固有、对称性控制的输运机制，并建立了各向异性、晶体对称性和高阶霍尔响应之间的直接联系。
英文摘要：
We report the emergence of an in-plane anomalous Hall effect (IPAHE) and a pronounced third-harmonic Hall response in an easy-plane trigonal magnetic system achieved via tuning of magnetic anisotropy. Angle-dependent Hall measurements reveal a clear departure from conventional sinusoidal behavior, revealing a strong sin(3θ) component at elevated fields, which increases as the magnetic anisotropy is reduced, accompanied by a finite in-plane Hall signal. Consistently, the observed nonlinear Hall signal exhibits a cubic field dependence, indicative of a leading third-order contribution to the transverse conductivity. The enhancement of the third harmonic reflects the evolution toward coherent in-plane magnetization and symmetry-governed nonlinear transport. These observations support an intrinsic, symmetry-controlled transport mechanism enabled by reduced magnetic anisotropy and establish a direct link between anisotropy, crystal symmetry, and higher-order Hall response.
