中文版 | English
Title

Emergence of Gapless Quantum Spin Liquid from Deconfined Quantum Critical Point

Author
Corresponding AuthorChen, Wei-Qiang
Publication Years
2022-09-19
DOI
Source Title
ISSN
2160-3308
Volume12Issue:3
Abstract
Quantum spin liquids (QSLs) as novel phases of matter with long-range entanglement and deconfined quantum critical points (DQCPs) as descriptions for unconventional phase transitions between two ordered states beyond the standard paradigm, such as the transition between antiferromagnetic (AFM) and valence -bond solid (VBS) phases, are two representative emerging phenomena. These implications for under-standing correlated materials and developing theoretical frameworks for many-body physics are of crucial importance. Here, we show that a gapless QSL can naturally emerge from a DQCP. Via large-scale tensor network simulations of a square-lattice spin-1/2 frustrated Heisenberg model, both QSL-state and DQCP-type AFM-VBS transitions are observed. By tuning the coupling constants, the AFM-VBS transition vanishes, and instead, a gapless QSL phase gradually develops in between. Remarkably, along the phase boundaries of AFM-QSL and QSL-VBS transitions, we always observe the same correlation-length exponents, nu approximate to 1.0, which is intrinsically different from the one of the DQCP-type transition, indicating new types of universality classes. Our results explicitly demonstrate a new scenario for understanding the emergence of gapless QSL from an underlying DQCP. The discovered QSL phase survives in a large region of tuning parameters, and we expect its experimental realization in solid-state materials or quantum simulators.
URL[Source Record]
Indexed By
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Corresponding
Funding Project
National Natural Science Foundation of China[N-CUHK427/18] ; French Research Council[A-CUHK402/18] ; National Natural Science Foundation of China[N-CUHK427/18] ; Fundamental Research Funds for the Central Universities["N-CUHK427/18","A-CUHK402/18"] ; Science, Technology and Innovation Commission of Shenzhen Municipality["11861161001","ANR-16-CE30-0025"] ; Shenzhen-Hong Kong Cooperation Zone for Technology and Innovation[ANR-18-CE30-0026-01] ; [11874078] ; [11834014] ; [ZDSYS20190902092905285] ; [2020B1515120100] ; [HZQB-KCZYB-2020050]
WOS Research Area
Physics
WOS Subject
Physics, Multidisciplinary
WOS Accession No
WOS:000861590600001
Publisher
Data Source
Web of Science
Citation statistics
Cited Times [WOS]:3
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/405984
DepartmentDepartment of Physics
量子科学与工程研究院
Affiliation
1.Chinese Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
2.Univ Toulouse, CNRS, Lab Phys Theor, F-31062 Toulouse, France
3.Beihang Univ, Peng Huanwu Collaborat Ctr Res & Educ, Dept Phys, Beijing 100191, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Key Lab Adv Quantum Funct Mat & Devices, Shenzhen 518055, Peoples R China
5.Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Phys, Shenzhen 518055, Peoples R China
Corresponding Author AffilicationSouthern University of Science and Technology;  Department of Physics;  Institute for Quantum Science and Engineering
Recommended Citation
GB/T 7714
Liu, Wen -Yuan,Hasik, Juraj,Gong, Shou-Shu,et al. Emergence of Gapless Quantum Spin Liquid from Deconfined Quantum Critical Point[J]. Physical Review X,2022,12(3).
APA
Liu, Wen -Yuan,Hasik, Juraj,Gong, Shou-Shu,Poilblanc, Didier,Chen, Wei-Qiang,&Gu, Zheng-Cheng.(2022).Emergence of Gapless Quantum Spin Liquid from Deconfined Quantum Critical Point.Physical Review X,12(3).
MLA
Liu, Wen -Yuan,et al."Emergence of Gapless Quantum Spin Liquid from Deconfined Quantum Critical Point".Physical Review X 12.3(2022).
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