论文标题
巨大的异常大厅和磁性立方体啤酒使化合物的效果
Giant anomalous Hall and Nernst effect in magnetic cubic Heusler compounds
论文作者
论文摘要
磁性和拓扑的相互作用开辟了外来线性响应效应的可能性，例如异常的大厅效应和异常的NernST效应，可以通过在电子结构中设计强浆果曲率来强烈增强。甚至可以利用它在高温下通过降低维度来创建一个量子异常的大厅状态。磁性啤酒化合物是为此目的的一种有前途的材料类别，因为它们在薄膜中生长，咖喱温度高，其电子结构具有强大的拓扑特征。在这里，我们提供了一项全面的研究，该研究对磁性立方全麦啤酒化合物的固有异常转运进行了研究，我们说明几种Heusler化合物的表现优于迄今为止最好的材料。结果揭示了对称性，尤其是镜面的重要性，以及对巨大异常霍尔和Nernst效应的磁性的重要性，这通常对线性响应（旋转霍尔效应，旋转轨道扭矩等）通常有效，由内在贡献支配。
The interplay of magnetism and topology opens up the possibility for exotic linear response effects, such as the anomalous Hall effect and the anomalous Nernst effect, which can be strongly enhanced by designing a strong Berry curvature in the electronic structure. It is even possible to utilize this to create a quantum anomalous Hall state at high temperatures by reducing the dimensionality. Magnetic Heusler compounds are a promising class of materials for this purpose because they grow in thin films, have a high Curie temperature, and their electronic structure hosts strong topological features. Here, we provide a comprehensive study of the intrinsic anomalous transport for magnetic cubic full Heusler compounds and we illustrate that several Heusler compounds outperform the best so far reported materials. The results reveal the importance of symmetries, especially mirror planes, in combination with magnetism for giant anomalous Hall and Nernst effects, which should be valid in general for linear responses (spin Hall effect, spin orbital torque, etc.) dominated by intrinsic contributions.
