TY  - JOUR
AU  - Shi, Chenfei
AU  - Liu, Yi
AU  - Maity, Bishal Baran
AU  - Wang, Qi
AU  - Kotla, Surya Rohith
AU  - Ramakrishnan, Sitaram
AU  - Eisele, Claudio
AU  - Agarwal, Harshit
AU  - Noohinejad, Leila
AU  - Tao, Qian
AU  - Kang, Baojuan
AU  - Lou, Zhefeng
AU  - Yang, Xiaohui
AU  - Qi, Yanpeng
AU  - Lin, Xiao
AU  - Xu, Zhu-An
AU  - Thamizhavel, Arumugam
AU  - Cao, Guang-Han
AU  - van Smaalen, Sander
AU  - Cao, Shixun
AU  - Bao, Jin-Ke
TI  - Annealing-induced long-range charge density wave order in magnetic kagome FeGe: Fluctuations and disordered structure
JO  - Science China / Physics, mechanics & astronomy
VL  - 67
IS  - 11
SN  - 1674-7348
CY  - Heidelberg
PB  - Springer
M1  - PUBDB-2024-06087
SP  - 117012
PY  - 2024
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:001317149500003
DO  - DOI:10.1007/s11433-024-2457-7
UR  - https://bib-pubdb1.desy.de/record/615329
ER  -