论文标题
在非旋转轨道偶联的非脉冲抗铁磁铁中自发的反对称自旋分裂
Spontaneous Antisymmetric Spin Splitting in Noncollinear Antiferromagnets without Spin-Orbit Coupling
论文作者
论文摘要
我们提出了通过无自旋轨道耦合的磁相跃迁来实现抗对称自旋切割带结构。它使我们能够用于多种磁性驱动的交叉相关和非偏置运输现象，与旋转轨道耦合导向系统中的磁极驱动现象相似。我们将其一般条件推出，作为三角形单元中的键型磁环形多极（极地张量）的出现，具有非共线性120 $^{\ circ} $ - AFM结构。通过使用增强多物的概念，我们通过有效的多极耦合来系统地分析现象。我们的多极描述无处不在地应用于任何三角形和六角形结构，包括三角形，kagome和呼吸kagome结构，即使没有旋转孔隙辅助，它也提供了如何设计和工程材料，即使没有旋转孔隙。
We propose a realization of an antisymmetric spin-split band structure through magnetic phase transitions without spin-orbit coupling. It enables us to utilize for a variety of magnetic-order-driven cross-correlated and nonreciprocal transport phenomena as similar to those in the spin-orbit-coupling oriented systems. We unveil its general condition as an emergence of a bond-type magnetic toroidal multipole (polar tensor) in the triangular unit with the noncollinear 120$^{\circ}$-AFM structures. By using the concept of augmented multipoles, we systematically analyze the phenomena in terms of an effective multipole coupling. Our multipole description is ubiquitously applied to any trigonal and hexagonal structures including the triangular, kagome, and breathing kagome structures, which provides how to design and engineer materials with a giant antisymmetric spin splitting and its physical responses even without the spin-orbit coupling.
