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Annealing-induced long-range charge density wave order in magnetic kagome FeGe: Fluctuations and disordered structure
2024-11
发表期刊SCIENCE CHINA: PHYSICS, MECHANICS AND ASTRONOMY (IF:6.4[JCR-2023],4.9[5-Year])
ISSN1674-7348
EISSN1869-1927
卷号67期号:11
发表状态已发表
DOI10.1007/s11433-024-2457-7
摘要

Charge density wave (CDW) in kagome materials with the geometric frustration is able to carry unconventional characteristics. Recently, a CDW has been observed below the antiferromagnetic order in kagome FeGe, in which magnetism and CDW are intertwined to form an emergent quantum ground state. However, the CDW is only short-ranged and the structural modulation originating from it has yet to be determined experimentally. Here we realize a long-range CDW order by post-annealing process, and resolve the structure model through single crystal X-ray diffraction. Occupational disorder of Ge resulting from short-range CDW correlations above TCDW is identified from structure refinements. The partial dimerization of Ge along the c axis is unveiled to be the dominant distortion for the CDW. Occupational disorder of Ge is also proved to exist in the CDW phase due to the random selection of partially dimerized Ge sites. Our work provides useful insights for understanding the unconventional nature of the CDW in FeGe. © Science China Press 2024.

关键词Annealing Antiferromagnetic materials Antiferromagnetism Charge density waves Density (specific gravity) Germanium compounds Antiferromagnetic orderings Charge-density-waves Disordered structures Fluctuation Fluctuation structures Geometric frustration Kagome Kagome materials Quantum ground state Structural modulations charge density wave kagome disordered structure fluctuations
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收录类别EI ; PPRN.PPRN ; SCI
语种英语
资助项目National Natural Science Foundation of China["12204298","12074242","12174334","52272265","U1932217","11974246","12004252"] ; Science and Technology Commission of Shanghai Municipality[21JC1402600] ; Zhejiang Provincial Natural Science Foundation of China[LQ23A040009] ; Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)[406658237]
WOS研究方向Physics
WOS类目Physics, Multidisciplinary
WOS记录号WOS:001317149500003
出版者Science China Press
EI入藏号20243817074048
EI主题词Single crystals
EI分类号1301.1.2 ; 1301.4.1 ; 201.7.1 ; 701.2 Magnetism: Basic Concepts and Phenomena ; 708.4 Magnetic Materials ; 804.2 Inorganic Compounds
原始文献类型Journal article (JA)
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/430480
专题物质科学与技术学院
物质科学与技术学院_PI研究组_齐彦鹏组
物质科学与技术学院_公共科研平台_拓扑物理实验室
通讯作者van Smaalen, Sander; Cao, Shixun; Bao, Jin-Ke
作者单位
1.Department of Physics, Materials Genome Institute, Institute for Quantum Science and Technology, Shanghai University, Shanghai; 200444, China
2.Key Laboratory of Quantum Precision Measurement of Zhejiang Province, School of Physics, Zhejiang University of Technology, Hangzhou; 310023, China
3.School of Physics, Zhejiang University, Hangzhou; 310027, China
4.Department of Condensed Matter Physics and Materials Science, Tata Institute of Fundamental Research, Mumbai; 400005, India
5.School of Physical Science and Technology, ShanghaiTech University, Shanghai; 201210, China
6.ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai; 201210, China
7.Laboratory of Crystallography, University of Bayreuth, Bayreuth; 95447, Germany
8.Department of Quantum Matter, AdSE, Hiroshima University, Higashi-Hiroshima; 739-8530, Japan
9.P24, PETRA III, Deutsches Elektronen-Synchrotron DESY, Hamburg; 22607, Germany
10.Key Laboratory for Quantum Materials of Zhejiang Province, School of Science, Westlake University, Hangzhou; 310024, China
11.Department of Physics, China Jiliang University, Hangzhou; 310018, China
12.Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai; 201210, China
13.Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing; 210093, China
14.Shanghai Key Laboratory of High Temperature Superconductors, Shanghai University, Shanghai; 200444, China
15.School of Physics, Hangzhou Normal University, Hangzhou; 311121, China
推荐引用方式
GB/T 7714
Shi, Chenfei,Liu, Yi,Maity, Bishal Baran,et al. Annealing-induced long-range charge density wave order in magnetic kagome FeGe: Fluctuations and disordered structure[J]. SCIENCE CHINA: PHYSICS, MECHANICS AND ASTRONOMY,2024,67(11).
APA Shi, Chenfei.,Liu, Yi.,Maity, Bishal Baran.,Wang, Qi.,Kotla, Surya Rohith.,...&Bao, Jin-Ke.(2024).Annealing-induced long-range charge density wave order in magnetic kagome FeGe: Fluctuations and disordered structure.SCIENCE CHINA: PHYSICS, MECHANICS AND ASTRONOMY,67(11).
MLA Shi, Chenfei,et al."Annealing-induced long-range charge density wave order in magnetic kagome FeGe: Fluctuations and disordered structure".SCIENCE CHINA: PHYSICS, MECHANICS AND ASTRONOMY 67.11(2024).
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