论文标题
爱因斯坦 - 迪哈斯的拓扑结构效应
Einstein-de Haas Effect of Topological Magnons
论文作者
论文摘要
我们预测了拓扑镁绝缘子中的爱因斯坦 - 戴haAS效应。拓扑状态中角动量的温度变化显示出标志变化行为，类似于低温热室电导响应。这表现为托管拓扑元音的材料的宏观机械旋转。我们表明，可以在方形的，kagome和Honeycomb晶格中测量具有实验可观察到的爱因斯坦-DE HAAS效应。尽管它的效果是方形晶格中最强的效果。我们分别使用自旋波和雪松玻色子理论对低温和高温相处。我们提出了一个实验设置，以检测我们的理论预测。我们建议可以测试我们的理论的候选方形材料。
We predict the existence of Einstein-de Haas effect in topological magnon insulators. Temperature variation of angular momentum in the topological state shows a sign change behavior, akin to the low temperature thermal Hall conductance response. This manifests itself as a macroscopic mechanical rotation of the material hosting topological magnons. We show that an experimentally observable Einstein-de Haas effect can be measured in the square-octagon, the kagome, and the honeycomb lattices. Albeit, the effect is the strongest in the square-octagon lattice. We treat both the low and the high temperature phases using spin wave and Schwinger boson theory, respectively. We propose an experimental set up to detect our theoretical predictions. We suggest candidate square-octagon materials where our theory can be tested.
