Rich unconventional Hall effects in a single quasi-kagome Kondo Weyl semimetal candidate Ce$_3$TiSb$_5$
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2024
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| author | He, Xiaobo Li, Ying Ge, Yongheng Zeng, Hai Song, Shi-Jie Liu, Jie Zou, Shuo Wang, Zhuo Li, Yuke Ding, Wenxin Dai, Jianhui Cao, Guang-Han Zhang, Xiao-Xiao Zhai, Tianyou Xu, Gang Luo, Yongkang |
| author_facet | He, Xiaobo Li, Ying Ge, Yongheng Zeng, Hai Song, Shi-Jie Liu, Jie Zou, Shuo Wang, Zhuo Li, Yuke Ding, Wenxin Dai, Jianhui Cao, Guang-Han Zhang, Xiao-Xiao Zhai, Tianyou Xu, Gang Luo, Yongkang |
| contents | It is generally believed that electronic correlation, geometric frustration, and topology, \textit{individually}, can facilitate the emergence of various intriguing properties that have attracted a broad audience for both fundamental research and potential applications. Here, we report a series of unconventional Hall effects observed in a \textit{single} compound - quasi-kagome Kondo Weyl semimetal candidate Ce$_3$TiSb$_5$. In the paramagnetic phase, signature of dynamic $c$-$f$ hybridization is revealed by a reduction of anomalous Hall effect and is connected to frustration-promoted incoherent Kondo scattering. A large topological Hall effect exceeding 0.2 $μΩ\cdot$cm is found at low temperatures, which should be ascribed to the non-collinear magnetic texture. In addition, a peculiar loop-shaped Hall effect with switching chirality is also seen, which is inferred to be associated with magnetic domain walls that pin history-dependent spin chirality and / or Fermi-arc surface states projected from the in-gap Weyl nodes. These exotic results place Ce$_3$TiSb$_5$ in a regime of highly-frustrated antiferromagnetic dense Kondo lattice with a nontrivial topology on an ``extended" global phase diagram, and highlight the interplay among electronic correlation, geometric frustration and topology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2408_04438 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Rich unconventional Hall effects in a single quasi-kagome Kondo Weyl semimetal candidate Ce$_3$TiSb$_5$ He, Xiaobo Li, Ying Ge, Yongheng Zeng, Hai Song, Shi-Jie Liu, Jie Zou, Shuo Wang, Zhuo Li, Yuke Ding, Wenxin Dai, Jianhui Cao, Guang-Han Zhang, Xiao-Xiao Zhai, Tianyou Xu, Gang Luo, Yongkang Strongly Correlated Electrons Materials Science Superconductivity It is generally believed that electronic correlation, geometric frustration, and topology, \textit{individually}, can facilitate the emergence of various intriguing properties that have attracted a broad audience for both fundamental research and potential applications. Here, we report a series of unconventional Hall effects observed in a \textit{single} compound - quasi-kagome Kondo Weyl semimetal candidate Ce$_3$TiSb$_5$. In the paramagnetic phase, signature of dynamic $c$-$f$ hybridization is revealed by a reduction of anomalous Hall effect and is connected to frustration-promoted incoherent Kondo scattering. A large topological Hall effect exceeding 0.2 $μΩ\cdot$cm is found at low temperatures, which should be ascribed to the non-collinear magnetic texture. In addition, a peculiar loop-shaped Hall effect with switching chirality is also seen, which is inferred to be associated with magnetic domain walls that pin history-dependent spin chirality and / or Fermi-arc surface states projected from the in-gap Weyl nodes. These exotic results place Ce$_3$TiSb$_5$ in a regime of highly-frustrated antiferromagnetic dense Kondo lattice with a nontrivial topology on an ``extended" global phase diagram, and highlight the interplay among electronic correlation, geometric frustration and topology. |
| title | Rich unconventional Hall effects in a single quasi-kagome Kondo Weyl semimetal candidate Ce$_3$TiSb$_5$ |
| topic | Strongly Correlated Electrons Materials Science Superconductivity |
| url | https://arxiv.org/abs/2408.04438 |