Evidence for Unfolded Fermi Surfaces in the Charge-Density-Wave State of Kagome Metal FeGe Revealed by de Haas-van Alphen Effect
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arXiv
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| Autori principali: | , , , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866916101229641728 |
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| author | Tang, Kaixin Zhou, Hanjing Li, Houpu Pan, Senyang Wu, Xueliang Li, Hongyu Zhang, Nan Xi, Chuanying Zhang, Jinglei Wang, Aifeng Wan, Xiangang Xiang, Ziji Chen, Xianhui |
| author_facet | Tang, Kaixin Zhou, Hanjing Li, Houpu Pan, Senyang Wu, Xueliang Li, Hongyu Zhang, Nan Xi, Chuanying Zhang, Jinglei Wang, Aifeng Wan, Xiangang Xiang, Ziji Chen, Xianhui |
| contents | The antiferromagnetic kagome lattice compound FeGe has been revealed to host an emergent charge-density-wave (CDW) state which manifests complex interplay between the spin, charge and lattice degrees of freedom. Here, we present a comprehensive study of the de Haas-van Alphen effect by measuring torque magnetometry under magnetic fields up to 45.2 T to map Fermi surfaces in this unusual CDW state. For field along the $c$ direction, we resolve four cyclotron orbits; the largest one roughly corresponding to the area of the 2$\times$2 folded Brillouin zone. Three smaller orbits are characterized by light effective cyclotron masses range from (0.18-0.30) $m_e$. Angle-resolved measurements identify one Fermi surface segment with weak anisotropy. Combined with band structure calculations, our results suggest that features of unfolded Fermi surfaces are robust against CDW reconstruction, corroborating the novel effect of a short-ranged CDW on the electronic structure. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_11770 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Evidence for Unfolded Fermi Surfaces in the Charge-Density-Wave State of Kagome Metal FeGe Revealed by de Haas-van Alphen Effect Tang, Kaixin Zhou, Hanjing Li, Houpu Pan, Senyang Wu, Xueliang Li, Hongyu Zhang, Nan Xi, Chuanying Zhang, Jinglei Wang, Aifeng Wan, Xiangang Xiang, Ziji Chen, Xianhui Strongly Correlated Electrons The antiferromagnetic kagome lattice compound FeGe has been revealed to host an emergent charge-density-wave (CDW) state which manifests complex interplay between the spin, charge and lattice degrees of freedom. Here, we present a comprehensive study of the de Haas-van Alphen effect by measuring torque magnetometry under magnetic fields up to 45.2 T to map Fermi surfaces in this unusual CDW state. For field along the $c$ direction, we resolve four cyclotron orbits; the largest one roughly corresponding to the area of the 2$\times$2 folded Brillouin zone. Three smaller orbits are characterized by light effective cyclotron masses range from (0.18-0.30) $m_e$. Angle-resolved measurements identify one Fermi surface segment with weak anisotropy. Combined with band structure calculations, our results suggest that features of unfolded Fermi surfaces are robust against CDW reconstruction, corroborating the novel effect of a short-ranged CDW on the electronic structure. |
| title | Evidence for Unfolded Fermi Surfaces in the Charge-Density-Wave State of Kagome Metal FeGe Revealed by de Haas-van Alphen Effect |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/2401.11770 |