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Possible Dirac quantum spin liquid in the kagome quantum antiferromagnet YCu3(OH)6Br2[Brx(OH)1-x]
Zeng, Zhenyuan1,2; Ma, Xiaoyan1,2; Wu, Si3; Li, Hai Feng3; Tao, Zhen4; Lu, Xingye4; Chen, Xiao Hui5; Mi, Jin Xiao5; Song, Shi Jie6; Cao, Guang Han6,7,8; Che, Guangwei9; Li, Kuo9; Li, Gang1,10; Luo, Huiqian1,10; Meng, Zi Yang1,11; Li, Shiliang1,2,10
2022-03-15
Source PublicationPhysical Review B
ISSN2469-9950
Volume105Issue:12
Abstract

We studied the magnetic properties of YCu3(OH)6Br2[Br1-x(OH)x] (x = 0.33), where Cu2+ ions form two-dimensional kagome layers. There is no magnetic order down to 50 mK, while the Curie-Weiss temperature is on the order of -100 K. At zero magnetic field, the low-temperature specific heat shows a T2 dependence. Above 2 T, a linear temperature dependence term in specific heat emerges, and the value of γ=C/T increases linearly with the field. Furthermore, the magnetic susceptibility tends to a constant value at T=0. Our results suggest that the magnetic ground state of YCu3(OH)6Br2[Br1-x(OH)x] is consistent with a Dirac quantum-spin-liquid state with a linearly dispersing spinon strongly coupled to an emergent gauge field, which has long been theoretically proposed as a candidate ground state in the two-dimensional kagome Heisenberg antiferromagnetic system.

DOI10.1103/PhysRevB.105.L121109
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000772887400003
Scopus ID2-s2.0-85126988122
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Citation statistics
Cited Times [WOS]:5   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorLi, Hai Feng
Affiliation1.Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190, China
2.School of Physical Sciences, University of Chinese Academy of Sciences, Beijing, 100190, China
3.Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, 999078, Macao
4.Center for Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing, 100875, China
5.Fujian Provincial Key Laboratory of Advanced Materials, Xiamen University, Department of Materials Science and Engineering, College of Materials, Xiamen University, Xiamen, 361005, China
6.Department of Physics, Zhejiang University, Hangzhou, 310027, China
7.Zhejiang Province Key Laboratory of Quantum Technology and Devices, Interdisciplinary Center for Quantum Information, State Key Lab of Silicon Materials, Zhejiang University, Hangzhou, 310027, China
8.Collaborative Innovation Centre of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
9.Center for High Pressure Science and Technology Advanced Research, Beijing, 10 Xibeiwang East Road, Haidian, 100094, China
10.Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
11.Department of Physics, HKU-UCAS Joint Institute of Theoretical and Computational Physics, The University of Hong Kong, Hong Kong, Pokfulam Road, Hong Kong
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Zeng, Zhenyuan,Ma, Xiaoyan,Wu, Si,et al. Possible Dirac quantum spin liquid in the kagome quantum antiferromagnet YCu3(OH)6Br2[Brx(OH)1-x][J]. Physical Review B,2022,105(12).
APA Zeng, Zhenyuan,Ma, Xiaoyan,Wu, Si,Li, Hai Feng,Tao, Zhen,Lu, Xingye,Chen, Xiao Hui,Mi, Jin Xiao,Song, Shi Jie,Cao, Guang Han,Che, Guangwei,Li, Kuo,Li, Gang,Luo, Huiqian,Meng, Zi Yang,&Li, Shiliang.(2022).Possible Dirac quantum spin liquid in the kagome quantum antiferromagnet YCu3(OH)6Br2[Brx(OH)1-x].Physical Review B,105(12).
MLA Zeng, Zhenyuan,et al."Possible Dirac quantum spin liquid in the kagome quantum antiferromagnet YCu3(OH)6Br2[Brx(OH)1-x]".Physical Review B 105.12(2022).
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