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arXiv · 2405.01800

Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal

Yangming Wang·Susumu Minami·Akito Sakai·Taishi Chen·Zili Feng·Daisuke Nishio-Hamane·Satoru Nakatsuji
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Abstract

The high-throughput calculation predicts that the Fe-based cubic ferromagnet Fe$_3$Si may exhibit a large anomalous Nernst effect (ANE). Here, we report our experimental observation of the large Nernst coefficient $S_{yx}\sim$2 $\mu$V/K and the transverse thermoelectric coefficient $-\alpha_{yx}$ $\sim$ 3 Am$^{-1}$K$^{-1}$ for Fe$_3$Si polycrystal at room temperature. The large $-\alpha_{yx}$ indicates that the large ANE originates from the intrinsic Berry curvature mechanism. The high Curie temperature of 840 K and the most abundant raw elements of Fe and Si make Fe$_3$Si a competitive candidate for Nernst thermoelectric generations.

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Yangming Wang, Susumu Minami, Akito Sakai, Taishi Chen, Zili Feng, Daisuke Nishio-Hamane, Satoru Nakatsuji. 2024-05-03. Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal. https://doi.org/10.1007/978-981-96-0191-2_2

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