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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

110 Citations (Scopus)

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.

Original language	English
Article number	077502
Journal	Chinese Physics Letters
Volume	34
Issue number	7
DOIs	https://doi.org/10.1088/0256-307X/34/7/077502
Publication status	Published - Jun 2017
Externally published	Yes

Access to Document

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

Cite this

@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 - http://www.scopus.com/inward/record.url?scp=85025111898&partnerID=8YFLogxK

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

Abstract

Access to Document

Other files and links

Fingerprint

Cite this