Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916647472726016 |
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| author | Wang, Yangming Minami, Susumu Sakai, Akito Chen, Taishi Feng, Zili Nishio-Hamane, Daisuke Nakatsuji, Satoru |
| author_facet | Wang, Yangming Minami, Susumu Sakai, Akito Chen, Taishi Feng, Zili Nishio-Hamane, Daisuke Nakatsuji, Satoru |
| contents | 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 $μ$V/K and the transverse thermoelectric coefficient $-α_{yx}$ $\sim$ 3 Am$^{-1}$K$^{-1}$ for Fe$_3$Si polycrystal at room temperature. The large $-α_{yx}$ 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_01800 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal Wang, Yangming Minami, Susumu Sakai, Akito Chen, Taishi Feng, Zili Nishio-Hamane, Daisuke Nakatsuji, Satoru Materials Science 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 $μ$V/K and the transverse thermoelectric coefficient $-α_{yx}$ $\sim$ 3 Am$^{-1}$K$^{-1}$ for Fe$_3$Si polycrystal at room temperature. The large $-α_{yx}$ 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. |
| title | Large anomalous Nernst effect in the ferromagnetic Fe3Si polycrystal |
| topic | Materials Science |
| url | https://arxiv.org/abs/2405.01800 |