标题： 二维四角形$\mathcal{PT}$对称反铁磁材料中奈尔矢量的单向塞贝克检测 显示英文标题

标题： The unidirectional Seebeck detection of the Néel vector in the two-dimensional tetragonal $\mathcal{PT}$-symmetric antiferromagnetic materials

摘要： 反铁磁自旋电子学中，对Néel矢量的反转（180$^{\circ}$旋转）进行有效检测是一项关键任务。在这里，我们提出了一种热方法，通过单向塞贝克效应（USE）来检测四角形$\mathcal{PT}$反铁磁材料中Néel矢量的反转。与之前的工作不同，这些工作中的USE来源于全局Rashba自旋-轨道耦合（SOC）或不对称磁振子散射，我们发现，在没有全局Rashba SOC的情况下，USE来源于四角形$\mathcal{PT}$反铁磁材料中隐藏的Rashba SOC与Néel矢量的耦合。使用一个通用的最小模型，我们分析了二维四角形晶格$\mathcal{PT}$反铁磁体中USE的行为。重要的是，发现当Néel矢量反转时，USE的符号会发生变化，这可以用来检测Néel矢量的反转。 显示英文摘要

摘要： The efficient detection of the reversal (180$^{\circ}$ rotation) of the N\'{e}el vector is one of the crucial tasks in antiferromagnetic spintronics. Here, we propose a thermal approach to detect the reversal of the N\'{e}el vector in the tetragonal $\mathcal{PT}$ antiferromagnetic materials through the unidirectional Seebeck effect (USE). Being different from the previous works in which USE stems from the global Rashba spin-orbit coupling (SOC) or asymmetric magnon scattering, we find that the USE originates from the coupling of the hidden Rashba SOC and the N\'{e}el vector in the tetragonal $\mathcal{PT}$ antiferromagnetic materials in the absence of the global Rashba SOC. Using a generic minimal model, we analyse the behaviors of the USE for the two-dimensional tetragonal lattice $\mathcal{PT}$ antiferromagnet. Importantly, It's found that when the N\'{e}el vector is reversed, the sign of the USE changes, which can be utilized to detect the reversal of the N\'{e}el vector.