单材料阴阳腿能斯特热电堆
A mono-material Nernst thermopile with hermaphroditic legs
摘要：
最近在几种拓扑磁体中观察到了一种大的横向热电响应，称为反常能斯特效应（ANE）。利用这种效应建造热电堆是最近几个提议的主题。在这里，我们设计并建立了一个热电堆与倾斜的相邻晶体的Mn $_3$ Sn的阵列。该设计采用单一材料，用两性腿取代传统设计的P和N热电偶对。该设计利用了所施加的磁场和磁化之间的大滞后角，我们将其归因于$xy$平面边缘处的磁八极的中断。消除腿之间的外部接触将提高效率，简化过程，并为新一代热电堆铺平道路。
英文摘要：
A large transverse thermoelectric response, known as anomalous Nernst effect (ANE) has been recently observed in several topological magnets. Building a thermopile employing this effect has been the subject of several recent propositions. Here, we design and build a thermopile with an array of tilted adjacent crystals of Mn$_3$Sn. The design employs a single material and replaces pairs of P and N thermocouples of the traditional design with hermaphroditic legs. The design exploits the large lag angle between the applied field and the magnetization, which we attribute to the interruption of magnetic octupoles at the edge of $xy$-plane. Eliminating extrinsic contacts between legs will boost the efficiency, simplify the process and pave the way for a new generation of thermopiles.
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