论文标题
电子手学作为非常规磁系统中异常霍尔效应的指标
Electronic chiralization as an indicator of the anomalous Hall effect in unconventional magnetic systems
论文作者
论文摘要
当对称性允许时，异常的大厅效应（AHE）可以出现在某些抗铁磁金属中。由于在这样的异常霍尔抗铁磁铁中，净磁化通常很小，因此具有具有与后者相同的对称性的AHE的其他物理指标很有用，并且可以方便地测量和计算。在这里，我们提出了称为电子手性（EC）的指标，这些指标是使用一般周期性晶体中自旋和电荷密度的空间梯度构建的，并且可以通过散射实验直接测量。这种构造特别揭示了磁电荷在具有消失净磁化的非常规磁系统中AHE中的重要作用。在EC的指导下，当磁电荷明确存在时，我们给出了两个示例：最小蜂窝模型，灵感来自Kagome Spin ICE的磁性递观相，并通过磁性电荷偏向二维DIRAC电子。
The anomalous Hall effect (AHE) can appear in certain antiferromagnetic metals when it is allowed by symmetry. Since the net magnetization is usually small in such anomalous Hall antiferromagnets, it is useful to have other physical indicators of the AHE that have the same symmetry properties as the latter and can be conveniently measured and calculated. Here we propose such indicators named as electronic chiralization (EC), which are constructed using spatial gradients of spin and charge densities in general periodic crystals, and can potentially be measured directly by scattering experiments. Such constructions particularly reveal the important role of magnetic charge in the AHE in unconventional magnetic systems with vanishing net magnetization. Guided by the EC we give two examples of the AHE when magnetic charge is explicitly present: A minimum honeycomb model inspired by the magnetic-charge-ordered phase of kagome spin ice, and skew scattering of two-dimensional Dirac electrons by magnetic charge.
