Charge density wave with suppressed long-range structural modulation in canted antiferromagnetic kagome FeGe
Abstract 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). For the samples with longer annealing periods, CDW-induced superlattice reflections become weak after the canted AFM transition, although long-range CDW order is still detectable by STM and REXS. We explore a long-range CDW order with suppressed structural modulation. 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.
Authors
- Guang‐Han Cao (ORCID: https://orcid.org/0000-0002-9669-5761)
- Bishal Baran Maity (ORCID: https://orcid.org/0000-0002-2555-876X)
- Wei Ren (ORCID: https://orcid.org/0000-0001-7317-3867)
- Bahadur Singh (ORCID: https://orcid.org/0000-0002-2013-1126)
- A. Thamizhavel (ORCID: https://orcid.org/0000-0003-1679-4370)
- Jia‐Xin Yin (ORCID: https://orcid.org/0000-0003-2661-4206)
- S. Ramakrishnan (ORCID: https://orcid.org/0000-0001-6065-4178)
- Xiang Li (ORCID: https://orcid.org/0000-0001-6457-583X)
- Jiyong Liu (ORCID: https://orcid.org/0000-0003-0444-957X)
- Claudio Eisele (ORCID: https://orcid.org/0000-0003-0076-0168)
- Leila Noohinejad (ORCID: https://orcid.org/0000-0002-9440-5548)
- Wanting Yang (ORCID: https://orcid.org/0000-0003-1736-4823)
- Chenfei Shi (ORCID: https://orcid.org/0000-0002-9130-8486)
- Harshit Agarwal (ORCID: https://orcid.org/0000-0003-0606-9618)
- Yuxiang Chen (ORCID: https://orcid.org/0009-0009-0807-6257)
- Surya Rohith Kotla (ORCID: https://orcid.org/0000-0002-7025-2874)
- Jin‐Ke Bao (ORCID: https://orcid.org/0000-0001-5522-3605)
- Sander van Smaalen (ORCID: https://orcid.org/0000-0001-9645-8240)
- Baojuan Kang
- Wanshan Hou (ORCID: https://orcid.org/0009-0003-4595-2865)
- Bikash Patra (ORCID: https://orcid.org/0000-0003-4459-3613)
- Tianyu Yang (ORCID: https://orcid.org/0009-0006-1088-1835)
- Hanbin Deng (ORCID: https://orcid.org/0000-0002-9476-5113)
- Zhihua Yang (ORCID: https://orcid.org/0000-0001-8726-7952)
- Qi Wang (ORCID: https://orcid.org/0000-0001-7129-1974)
- Guowei Liu (ORCID: https://orcid.org/0000-0003-1283-788X)
- Shixun Cao (ORCID: https://orcid.org/0000-0002-3915-2621)
- Yuke Li (ORCID: https://orcid.org/0000-0002-6149-1902)
- Yi Liu (ORCID: https://orcid.org/0000-0002-4066-689X)
- Yanpeng Qi (ORCID: https://orcid.org/0000-0003-2722-1375)
- Yongchang Li (ORCID: https://orcid.org/0000-0003-4275-2182)
- Xuerong Liu (ORCID: https://orcid.org/0000-0001-7688-1156)
- Zhaodi Lin
Institutions
- Shanghai University (CN)
- Tata Institute of Fundamental Research (IN)
- Beijing Institute of Technology (CN)
- Centre National de la Recherche Scientifique (FR)
- Hangzhou Normal University (CN)
- Johannes Gutenberg University Mainz (DE)
- Deutsches Elektronen-Synchrotron DESY (DE)
- Southern University of Science and Technology (CN)
- ShanghaiTech University (CN)
- Collaborative Innovation Center of Advanced Microstructures (CN)
- Institut Néel (FR)
- University of Bayreuth (DE)
- Zhejiang University of Technology (CN)
- Shanghai Institute of Technology (CN)
- Zhejiang University (CN)
- Nanjing University (CN)
- Université Grenoble Alpes (FR)
Publication Details
- Journal
- Communications Physics
- Published
- 2025-10-15
- DOI
- https://doi.org/10.1038/s42005-025-02316-6
- Primary Topic
- Advanced Condensed Matter Physics
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Science Foundation
- Tata Institute of Fundamental Research
- Department of Atomic Energy, Government of India
- Deutsche Forschungsgemeinschaft
- National Natural Science Foundation of China
- Ministry of Education, India
- Centre National de la Recherche Scientifique
- Zhejiang University
- Beijing Institute of Technology
- Hangzhou Normal University
- Nanjing University
- Zhejiang University of Technology
- Southern University of Science and Technology
- ShanghaiTech University
- Shanghai Key Laboratory of High Temperature Superconductors
- Deutsches Elektronen-Synchrotron
- School of Physical Science and Technology, ShanghaiTech University
- Natural Science Foundation of Zhejiang Province