Spin Hall effect in van der Waals ferromagnet Fe$_{5}$GeTe$_{2}$
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arXiv
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866918281166716928 |
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| author | Ohta, Tomoharu Samukawa, Yuto Jiang, Nan Niimi, Yasuhiro Yamagami, Kohei Okada, Yoshinori Otani, Yoshichika Kondou, Kouta |
| author_facet | Ohta, Tomoharu Samukawa, Yuto Jiang, Nan Niimi, Yasuhiro Yamagami, Kohei Okada, Yoshinori Otani, Yoshichika Kondou, Kouta |
| contents | We investigate the spin Hall effect (SHE) in a van der Waals (vdW) ferromagnet Fe$_{5}$GeTe$_{2}$ (FGT) with a Curie temperature $T_{\rm C}$ of 310 K utilizing the spin-torque ferromagnetic resonance method. In synchronization with the emergence of the ferromagnetic phase resulting in the anomalous Hall effect (AHE), a noticeable enhancement in the SHE was observed below $T_{\rm C}$. On the other hand, the SHE shows a different temperature dependence from the AHE: the effective spin Hall conductivity is clearly enhanced with decreasing temperature unlike the anomalous Hall conductivity, reflecting the variation of band-structure accompanied by the complicated magnetic ordering of the FGT. The results provide a deep understanding of the SHE in magnetic materials to open a new route for novel functionalities in vdW materials-based spintronic devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2601_06274 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Spin Hall effect in van der Waals ferromagnet Fe$_{5}$GeTe$_{2}$ Ohta, Tomoharu Samukawa, Yuto Jiang, Nan Niimi, Yasuhiro Yamagami, Kohei Okada, Yoshinori Otani, Yoshichika Kondou, Kouta Mesoscale and Nanoscale Physics We investigate the spin Hall effect (SHE) in a van der Waals (vdW) ferromagnet Fe$_{5}$GeTe$_{2}$ (FGT) with a Curie temperature $T_{\rm C}$ of 310 K utilizing the spin-torque ferromagnetic resonance method. In synchronization with the emergence of the ferromagnetic phase resulting in the anomalous Hall effect (AHE), a noticeable enhancement in the SHE was observed below $T_{\rm C}$. On the other hand, the SHE shows a different temperature dependence from the AHE: the effective spin Hall conductivity is clearly enhanced with decreasing temperature unlike the anomalous Hall conductivity, reflecting the variation of band-structure accompanied by the complicated magnetic ordering of the FGT. The results provide a deep understanding of the SHE in magnetic materials to open a new route for novel functionalities in vdW materials-based spintronic devices. |
| title | Spin Hall effect in van der Waals ferromagnet Fe$_{5}$GeTe$_{2}$ |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2601.06274 |