论文标题
抗铁磁绝缘子中手性光磁化器的对称方法
Symmetry Approach to Chiral Optomagnonics in Antiferromagnetic Insulators
论文作者
论文摘要
我们通过考虑电磁场和旋转激发之间的共同对称性来讨论抗铁磁绝缘子中手性光磁管的几个方面。这种方法使我们可以从相似的角度看光学和磁性材料，并讨论它们之间的有用类比。我们表明，在对称转化的相同八维代数下，共线抗铁磁体中的自旋波和真空中的电磁场都是不变的。通过这种类比，我们可以将光学手性的概念扩展到抗铁磁绝缘子，并证明在旋转电流存在下这些材料中的自旋波动力学类似于手性地质材料内部的光。还从对称的角度讨论了宏伟旋转电流的照片兴趣。证明可以通过圆形极化光将直接的镁性自旋光电流退出，这可以被视为光藻素效应的镁性类似物。我们还注意到，Zitterbewegung的过程应出现，并可能在照片兴奋过程中发挥作用。
We discuss several aspects of chiral optomagnonics in antiferromagnetic insulators by considering common symmetries between the electromagnetic field and spin excitations. This approach allows us to look at optical and magnetic materials from similar perspectives, and discuss useful analogies between them. We show that spin waves in collinear antiferromagnets and the electromagnetic field in vacuum are both invariant under the same eight-dimensional algebra of symmetry transformations. By such analogy, we can extend the concept of optical chirality to antiferromagnetic insulators, and demonstrate that the spin-wave dynamics in these materials in the presence of a spin current is similar to that of the light inside chiral metamaterials. Photo-excitation of magnonic spin currents is also discussed from the symmetry point of view. It is demonstrated that a direct magnonic spin photocurrent can be exited by circularly polarized light, which can be considered as a magnonic analogue of the photogalvanic effect. We also note that the Zitterbewegung process should appear and may play a role in photo-excitation processes.
