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Giant anomalous Hall and Nernst effect in magnetic cubic Heusler compounds
npj Computational Materials ( IF 9.4 ) Pub Date : 2020-06-05 , DOI: 10.1038/s41524-020-0342-5
Jonathan Noky , Yang Zhang , Johannes Gooth , Claudia Felser , Yan Sun

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 large Berry curvature in the electronic structure. Magnetic Heusler compounds are a promising class of materials for this purpose because they are versatile, show magnetism, 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.



中文翻译:

磁性立方Heusler化合物中的巨型异常霍尔和能斯特效应

磁性和拓扑的相互作用为异常的线性响应效应提供了可能性,例如异常霍尔效应和能斯特异常效应,可以通过在电子结构中设计大的贝里曲率来大大增强这种效应。磁性Heusler化合物是一种有前途的材料,因为它们用途广泛,具有磁性,并且其电子结构具有强大的拓扑特征。在这里,我们对磁性立方全Heusler化合物的固有异常传输进行了全面研究,并说明了几种Heusler化合物的性能优于迄今为止报道的最佳材料。结果揭示了对称性,特别是镜面的重要性,并结合了磁性对巨大的异常霍尔和能斯特效应的影响,

更新日期:2020-06-05
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