论文标题
平面异常霍尔在PT对称抗铁磁材料中的效应
In-plane anomalous Hall effect in PT-symmetric antiferromagnetic materials
论文作者
论文摘要
通常在电场，磁场和霍尔电流之间具有正交构型的铁磁材料中观察到异常的大厅效应（AHE），这是一种各种低功率耗散量子现象的方案，是物质的有趣拓扑阶段的基本先驱。在这里，基于对称分析，我们发现了$ \ Mathcal {pt} $对称的反铁磁性（AFM）系统中的平面磁场（IPAHE）诱导的非常规AHE，具有磁场的线性依赖性和2 $π$ Angle Adecition and Andectal of Commintaime Ahee。我们在已知的AFM Dirac半学Cumnas和一种新型的AFM异二维与$ _2 $ -VS超级晶格具有带有Nodal-line Fermi表面的新型AFM Dirac半学Cumnas中的关键发现，并简要讨论了实验性检测。我们的工作为搜索和/或设计新颖的Ipahe材料提供了有效的途径，这些材料可以极大地促进其在AFM Spintronic设备中的应用。
Anomalous Hall effect (AHE), a protocol of various low-power dissipation quantum phenomena and a fundamental precursor of intriguing topological phases of matter, is usually observed in ferromagnetic materials with orthogonal configuration between the electric field, magnetization and the Hall current. Here, based on the symmetry analysis, we find an unconventional AHE induced by the in-plane magnetic field (IPAHE) via spin-canting effect in $\mathcal{PT}$ symmetric antiferromagnetic (AFM) systems, featuring a linear dependence of magnetic field and 2$π$ angle periodicity with a comparable magnitude as conventional AHE. We demonstrate the key findings in the known AFM Dirac semimetal CuMnAs and a new kind of AFM heterodimensional VS$_2$-VS superlattice with a nodal-line Fermi surface and also briefly discuss the experimental detection. Our work provides an efficient pathway to search and/or design realistic materials for novel IPAHE that could greatly facilitate their application in AFM spintronic devices.
