Giant Anomalous Hall Effect in Kagome Nodal Surface Semimetal Fe$_3$Ge
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arXiv
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| Main Authors: | , , , , , , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866917903251537920 |
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| author | Li, Shu-Xiang Wang, Wencheng Xu, Sheng Li, Tianhao Li, Zheng Wang, Jinjin Mi, Jun-Jian Tao, Qian Tang, Feng Wan, Xiangang Xu, Zhu-An |
| author_facet | Li, Shu-Xiang Wang, Wencheng Xu, Sheng Li, Tianhao Li, Zheng Wang, Jinjin Mi, Jun-Jian Tao, Qian Tang, Feng Wan, Xiangang Xu, Zhu-An |
| contents | It is well known that the intrinsic anomalous Hall effect (AHE) arises from the integration of the non-zero Berry curvature (BC), conventionally observed in the Dirac/Weyl and nodal-line semimetals. Moreover, nodal surface semimetals are expected to exhibit more significant BC under the prevalence of degenerate points near the Fermi level. In this work, we report the detection of a giant AHE in the Kagome magnet Fe$_3$Ge with a two-dimensional (2D) nodal surface (NS) at $k_{z}=π$ plane, exhibiting an anomalous Hall conductivity (AHC) of 1500 $Ω^{-1}$cm$^{-1}$ at 160 K, the highest among all reported Kagome topological materials. This finding suggests a new platform for searching large AHC materials and facilitates potential room-temperature applications in spintronic devices and quantum computing. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2501_15424 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Giant Anomalous Hall Effect in Kagome Nodal Surface Semimetal Fe$_3$Ge Li, Shu-Xiang Wang, Wencheng Xu, Sheng Li, Tianhao Li, Zheng Wang, Jinjin Mi, Jun-Jian Tao, Qian Tang, Feng Wan, Xiangang Xu, Zhu-An Mesoscale and Nanoscale Physics Materials Science It is well known that the intrinsic anomalous Hall effect (AHE) arises from the integration of the non-zero Berry curvature (BC), conventionally observed in the Dirac/Weyl and nodal-line semimetals. Moreover, nodal surface semimetals are expected to exhibit more significant BC under the prevalence of degenerate points near the Fermi level. In this work, we report the detection of a giant AHE in the Kagome magnet Fe$_3$Ge with a two-dimensional (2D) nodal surface (NS) at $k_{z}=π$ plane, exhibiting an anomalous Hall conductivity (AHC) of 1500 $Ω^{-1}$cm$^{-1}$ at 160 K, the highest among all reported Kagome topological materials. This finding suggests a new platform for searching large AHC materials and facilitates potential room-temperature applications in spintronic devices and quantum computing. |
| title | Giant Anomalous Hall Effect in Kagome Nodal Surface Semimetal Fe$_3$Ge |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2501.15424 |