论文标题
多晶Weyl NBP的较大温度范围内的大型Nernst功率因数
Large Nernst Power Factor over a Broad Temperature Range in Polycrystalline Weyl Semimetal NbP
论文作者
论文摘要
拓扑材料的发现为热电学能量转换提供了新的机会，以利用先进的材料与热电材料具有许多共同特征。在这项工作中，我们报告了磁性Weyl半含量NBP的磁性磁性特性和Nern的效果。我们发现，多晶的大量NBP显示出比在磁场下的常规热电器更大的Nernst Thermpower。结果，在9 t和136 K时达到了〜35*10-4 WM-1K-2的最大北力因数，比其常规功率因数高4倍，并且也与最新的热电学相媲美。此外，北方功率因子在较大的温度范围内保持相对较高的价值。这些结果凸显了基于NernST效果和横向运输的拓扑半学可以增强热电性能的增强。
The discovery of topological materials has provided new opportunities to exploit advanced materials for heat-to-electricity energy conversion as they share many common characteristics with thermoelectric materials. In this work, we report the magneto-thermoelectric properties and Nernst effect of the topological Weyl semimetal NbP. We find that polycrystalline, bulk NbP shows a significantly larger Nernst thermopower than its conventional thermopower under magnetic field. As a result, a maximum Nernst power factor of ~ 35*10-4 Wm-1K-2 is achieved at 9 T and 136 K, which is 4 times higher than its conventional power factor and is also comparable to that of state-of-the-art thermoelectrics. Moreover, the Nernst power factor maintains relatively large value over a broad temperature range. These results highlight that the enhancement of thermoelectric performance can be achieved in topological semimetals based on the Nernst effect and transverse transport.
