Large Anomalous Hall Conductivity Derived from an $f$-Electron Collinear Antiferromagnetic Structure
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866917770229186560 |
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| author | Kotegawa, Hisashi Tanaka, Hiroto Takeuchi, Yuta Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki |
| author_facet | Kotegawa, Hisashi Tanaka, Hiroto Takeuchi, Yuta Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki |
| contents | Appropriate symmetry breaking generates an anomalous Hall (AH) effect, even in antiferromagnetic (AFM) materials. Itinerant magnets with $d$ electrons are typical examples that show a significant response. By contrast, the process by which a response emerges from $f$-electron AFM structures remains unclear. In this study, we show that an AFM material, Ce$_2$CuGe$_6$, yields a large AH conductivity (AHC) of $550$ $Ω^{-1}$cm$^{-1}$, which exceeds the values previously reported in $d$-electron AFM materials. Observed features, including the scaling relation against electrical conductivity, suggest that this AH transport is induced cooperatively by both intrinsic and extrinsic mechanisms derived from the AFM structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_04071 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Large Anomalous Hall Conductivity Derived from an $f$-Electron Collinear Antiferromagnetic Structure Kotegawa, Hisashi Tanaka, Hiroto Takeuchi, Yuta Tou, Hideki Sugawara, Hitoshi Hayashi, Junichi Takeda, Keiki Strongly Correlated Electrons Materials Science Appropriate symmetry breaking generates an anomalous Hall (AH) effect, even in antiferromagnetic (AFM) materials. Itinerant magnets with $d$ electrons are typical examples that show a significant response. By contrast, the process by which a response emerges from $f$-electron AFM structures remains unclear. In this study, we show that an AFM material, Ce$_2$CuGe$_6$, yields a large AH conductivity (AHC) of $550$ $Ω^{-1}$cm$^{-1}$, which exceeds the values previously reported in $d$-electron AFM materials. Observed features, including the scaling relation against electrical conductivity, suggest that this AH transport is induced cooperatively by both intrinsic and extrinsic mechanisms derived from the AFM structure. |
| title | Large Anomalous Hall Conductivity Derived from an $f$-Electron Collinear Antiferromagnetic Structure |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2409.04071 |