Charge density wave with suppressed long-range structural modulation in canted antiferromagnetic kagome FeGe
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arXiv
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| Auteurs principaux: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2024
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| _version_ | 1866916843305828352 |
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| author | Shi, Chenfei Hou, Wenchang Deng, Hanbin Patra, Bikash Kotla, Surya Rohith Liu, Yi Ramakrishnan, Sitaram Eisele, Claudio Agarwal, Harshit Noohinejad, Leila Liu, Ji-Yong Yang, Tianyu Liu, Guowei Maity, Bishal Baran Wang, Qi Lin, Zhaodi Kang, Baojuan Yang, Wanting Li, Yongchang Yang, Zhihua Chen, Yuxiang Li, Xiang Li, Yuke Qi, Yanpeng Thamizhavel, Arumugam Ren, Wei Cao, Guang-Han Yin, Jia-Xin Singh, Bahadur Liu, Xuerong van Smaalen, Sander Cao, Shixun Bao, Jin-Ke |
| author_facet | Shi, Chenfei Hou, Wenchang Deng, Hanbin Patra, Bikash Kotla, Surya Rohith Liu, Yi Ramakrishnan, Sitaram Eisele, Claudio Agarwal, Harshit Noohinejad, Leila Liu, Ji-Yong Yang, Tianyu Liu, Guowei Maity, Bishal Baran Wang, Qi Lin, Zhaodi Kang, Baojuan Yang, Wanting Li, Yongchang Yang, Zhihua Chen, Yuxiang Li, Xiang Li, Yuke Qi, Yanpeng Thamizhavel, Arumugam Ren, Wei Cao, Guang-Han Yin, Jia-Xin Singh, Bahadur Liu, Xuerong van Smaalen, Sander Cao, Shixun Bao, Jin-Ke |
| contents | Kagome lattice can host abundant exotic quantum states such as superconductivity and charge density wave (CDW). Recently, successive orders of A-type antiferromagnetism (AFM), CDW and canted AFM have been manifested upon cooling in kagome FeGe. However, the mechanism of CDW and interaction with magnetism remains unclear. Here we investigate the evolution of CDW with temperature across the canted AFM by single-crystal x-ray diffraction, scanning tunneling microscope (STM) and resonant elastic x-ray scattering (REXS). Interestingly, CDW-induced superlattice reflections become weak after the canted AFM, although long-range CDW order is still detectable by STM and REXS. We uncover a novel long-range CDW order with suppressed structural modulation, likely due to the competition for the underlying crystal structure between CDW and canted AFM. Additionally, occupational modulations of Ge1 in the kagome plane and displacive modulations of all atoms were extracted. The results confirm Ge dimerization along the c axis and suggest a dynamic transformation between different CDW domains. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2404_00996 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Charge density wave with suppressed long-range structural modulation in canted antiferromagnetic kagome FeGe Shi, Chenfei Hou, Wenchang Deng, Hanbin Patra, Bikash Kotla, Surya Rohith Liu, Yi Ramakrishnan, Sitaram Eisele, Claudio Agarwal, Harshit Noohinejad, Leila Liu, Ji-Yong Yang, Tianyu Liu, Guowei Maity, Bishal Baran Wang, Qi Lin, Zhaodi Kang, Baojuan Yang, Wanting Li, Yongchang Yang, Zhihua Chen, Yuxiang Li, Xiang Li, Yuke Qi, Yanpeng Thamizhavel, Arumugam Ren, Wei Cao, Guang-Han Yin, Jia-Xin Singh, Bahadur Liu, Xuerong van Smaalen, Sander Cao, Shixun Bao, Jin-Ke Strongly Correlated Electrons Materials Science Kagome lattice can host abundant exotic quantum states such as superconductivity and charge density wave (CDW). Recently, successive orders of A-type antiferromagnetism (AFM), CDW and canted AFM have been manifested upon cooling in kagome FeGe. However, the mechanism of CDW and interaction with magnetism remains unclear. Here we investigate the evolution of CDW with temperature across the canted AFM by single-crystal x-ray diffraction, scanning tunneling microscope (STM) and resonant elastic x-ray scattering (REXS). Interestingly, CDW-induced superlattice reflections become weak after the canted AFM, although long-range CDW order is still detectable by STM and REXS. We uncover a novel long-range CDW order with suppressed structural modulation, likely due to the competition for the underlying crystal structure between CDW and canted AFM. Additionally, occupational modulations of Ge1 in the kagome plane and displacive modulations of all atoms were extracted. The results confirm Ge dimerization along the c axis and suggest a dynamic transformation between different CDW domains. |
| title | Charge density wave with suppressed long-range structural modulation in canted antiferromagnetic kagome FeGe |
| topic | Strongly Correlated Electrons Materials Science |
| url | https://arxiv.org/abs/2404.00996 |