Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu3Zn(OH)6FBr

Zili Feng; Zheng Li; Xin Meng; Wei Yi; Yuan Wei; Jun Zhang; Yan Cheng Wang; Wei Jiang; Zheng Liu; Shiyan Li; Feng Liu; Jianlin Luo; Shiliang Li; Guo Qing Zheng; Zi Yang Meng; Jia Wei Mei; Youguo Shi

doi:10.1088/0256-307X/34/7/077502

Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu₃Zn(OH)₆FBr

Zili Feng
, Zheng Li
, Xin Meng
, Wei Yi
, Yuan Wei
, Jun Zhang
, Yan Cheng Wang
, Wei Jiang
, Zheng Liu
, Shiyan Li
, Feng Liu
, Jianlin Luo
, Shiliang Li
, Guo Qing Zheng^*
, Zi Yang Meng
, Jia Wei Mei
, Youguo Shi

^*此作品的通讯作者

CAS - Institute of Physics
University of Chinese Academy of Sciences
Fudan University
University of Utah
Tsinghua University
Collaborative Innovation Center of Advanced Microstructures
Collaborative Innovation Center of Quantum Matter
Okayama University
Southern University of Science and Technology
China Academy of Engineering Physics

科研成果: 期刊稿件 › 文章 › 同行评审

128 引用（Scopus）

摘要

We report a new kagome quantum spin liquid candidate Cu₃Zn(OH)₆FBr, which does not experience any phase transition down to 50 mK, more than three orders lower than the antiferromagnetic Curie-Weiss temperature (∼200 K). A clear gap opening at low temperature is observed in the uniform spin susceptibility obtained from ¹⁹F nuclear magnetic resonance measurements. We observe the characteristic magnetic field dependence of the gap as expected for fractionalized spin-1/2 spinon excitations. Our experimental results provide firm evidence for spin fractionalization in a topologically ordered spin system, resembling charge fractionalization in the fractional quantum Hall state.

源语言	英语
文章编号	077502
期刊	Chinese Physics Letters
卷	34
期	7
DOI	https://doi.org/10.1088/0256-307X/34/7/077502
出版状态	已出版 - 6月 2017
已对外发布	是

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@article{941dae10c18240618459eb716bd61a2e,

title = "Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu3Zn(OH)6FBr",

abstract = "We report a new kagome quantum spin liquid candidate Cu3Zn(OH)6FBr, which does not experience any phase transition down to 50 mK, more than three orders lower than the antiferromagnetic Curie-Weiss temperature (∼200 K). A clear gap opening at low temperature is observed in the uniform spin susceptibility obtained from 19F nuclear magnetic resonance measurements. We observe the characteristic magnetic field dependence of the gap as expected for fractionalized spin-1/2 spinon excitations. Our experimental results provide firm evidence for spin fractionalization in a topologically ordered spin system, resembling charge fractionalization in the fractional quantum Hall state.",

author = "Zili Feng and Zheng Li and Xin Meng and Wei Yi and Yuan Wei and Jun Zhang and Wang, \{Yan Cheng\} and Wei Jiang and Zheng Liu and Shiyan Li and Feng Liu and Jianlin Luo and Shiliang Li and Zheng, \{Guo Qing\} and Meng, \{Zi Yang\} and Mei, \{Jia Wei\} and Youguo Shi",

note = "Publisher Copyright: {\textcopyright} 2017 Chinese Physical Society and IOP Publishing Ltd.",

year = "2017",

month = jun,

doi = "10.1088/0256-307X/34/7/077502",

language = "English",

volume = "34",

journal = "Chinese Physics Letters",

issn = "0256-307X",

publisher = "IOP Publishing Ltd.",

number = "7",

}

TY - JOUR

T1 - Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu3Zn(OH)6FBr

AU - Feng, Zili

AU - Li, Zheng

AU - Meng, Xin

AU - Yi, Wei

AU - Wei, Yuan

AU - Zhang, Jun

AU - Wang, Yan Cheng

AU - Jiang, Wei

AU - Liu, Zheng

AU - Li, Shiyan

AU - Liu, Feng

AU - Luo, Jianlin

AU - Li, Shiliang

AU - Zheng, Guo Qing

AU - Meng, Zi Yang

AU - Mei, Jia Wei

AU - Shi, Youguo

PY - 2017/6

Y1 - 2017/6

N2 - We report a new kagome quantum spin liquid candidate Cu3Zn(OH)6FBr, which does not experience any phase transition down to 50 mK, more than three orders lower than the antiferromagnetic Curie-Weiss temperature (∼200 K). A clear gap opening at low temperature is observed in the uniform spin susceptibility obtained from 19F nuclear magnetic resonance measurements. We observe the characteristic magnetic field dependence of the gap as expected for fractionalized spin-1/2 spinon excitations. Our experimental results provide firm evidence for spin fractionalization in a topologically ordered spin system, resembling charge fractionalization in the fractional quantum Hall state.

AB - We report a new kagome quantum spin liquid candidate Cu3Zn(OH)6FBr, which does not experience any phase transition down to 50 mK, more than three orders lower than the antiferromagnetic Curie-Weiss temperature (∼200 K). A clear gap opening at low temperature is observed in the uniform spin susceptibility obtained from 19F nuclear magnetic resonance measurements. We observe the characteristic magnetic field dependence of the gap as expected for fractionalized spin-1/2 spinon excitations. Our experimental results provide firm evidence for spin fractionalization in a topologically ordered spin system, resembling charge fractionalization in the fractional quantum Hall state.

UR - https://www.scopus.com/pages/publications/85025111898

U2 - 10.1088/0256-307X/34/7/077502

DO - 10.1088/0256-307X/34/7/077502

M3 - Article

AN - SCOPUS:85025111898

SN - 0256-307X

VL - 34

JO - Chinese Physics Letters

JF - Chinese Physics Letters

IS - 7

M1 - 077502

ER -

Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu3Zn(OH)6FBr

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Gapped Spin-1/2 Spinon Excitations in a New Kagome Quantum Spin Liquid Compound Cu₃Zn(OH)₆FBr