标题： 多源驱动的拓扑反铁磁体EuAl2Si2中的巨平面霍尔效应及其可调自旋结构 显示英文标题

标题： Multi-origin driven giant planar Hall effect in topological antiferromagnet EuAl2Si2 with tunable spin texture

摘要： 在拓扑材料中，平面霍尔效应（PHE）通常被视为深刻量子现象的标志——最显著的是阿德勒-贝尔-杰克维奇手性异常和贝里曲率，使其成为解析新兴相拓扑本质不可或缺的工具。 在本研究中，我们深入研究了最近发现的层状拓扑反铁磁体EuAl2Si2中的PHE和各向异性磁阻。 我们对强健的PHE信号（在2 K和8 T时约为3.8{\mu }{\Omega } cm）的分析揭示了机制之间的明显相互作用。 虽然贝里曲率起次要作用，但主要贡献来自于场致铁磁态中的经典轨道MR以及顺磁区中被抑制的自旋涨落。 这些见解不仅将具有高度可调自旋结构的EuAl2Si2定位为探测磁输运中自旋构型与能带拓扑之间复杂耦合的典型系统，还为设计具有定制PHE响应的新材料铺平了道路，突显了其在量子传感、自旋电子器件和拓扑保护电子系统中的重要应用前景。 显示英文摘要

摘要： In topological materials, the planar Hall effect (PHE) is often regarded as a hallmark of profound quantum phenomena-most notably the Adler-Bell-Jackiw chiral anomaly and Berry curvature-rendering it an indispensable tool for deciphering the topological essence of emergent phases. In this study, we delve into the PHE and anisotropic magnetoresistance in the recently discovered layered topological antiferromagnet EuAl2Si2. Our analysis of the robust PHE signal (~3.8 {\mu}{\Omega} cm at 2 K and 8 T) unveils a distinct interplay of mechanisms. While Berry curvature plays a minor role, the dominant contributions stem from classical orbital MR in the field-induced ferromagnetic state and field-suppressed spin fluctuations in the paramagnetic regime. These insights not only position EuAl2Si2-with its highly tunable spin texture-as an exemplary system for probing the intricate coupling between spin configurations and band topology in magnetotransport but also pave the way for designing novel materials with tailored PHE responses, highlighting significant application prospects in quantum sensing, spintronic devices, and topologically protected electronic systems.