Disorder-Induced Mimicry of a Spin Liquid in YbMgGaO4

Zhu, Zhenyue; Maksimov, P.  A.; White, Steven R.; Chernyshev, A.  L.

doi:10.1103/physrevlett.119.157201

Disorder-Induced Mimicry of a Spin Liquid in YbMgGaO₄

Journal Article · Wed Oct 11 00:00:00 EDT 2017 · Physical Review Letters

DOI:https://doi.org/10.1103/physrevlett.119.157201· OSTI ID:1784334

Zhu, Zhenyue ^[1]; Maksimov, P. A. ^[2]; White, Steven R. ^[2]; Chernyshev, A. L. ^[2]

Univ. of California, Irvine, CA (United States); University of California, Irvine
Univ. of California, Irvine, CA (United States)

In this study, we suggest that a randomization of the pseudo-dipolar interaction in the spin-orbit-generated low-energy Hamiltonian of YbMgGaO₄ due to an inhomogeneous charge environment from a natural mixing of Mg²⁺ and Ga³⁺ can give rise to orientational spin disorder and mimic a spin-liquid-like state. In the absence of such quenched disorder, 1/S and density matrix renormalization group calculations both show robust ordered states for the physically relevant phases of the model. Our scenario is consistent with the available experimental data and further experiments are proposed to support it.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of California, Irvine, CA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division

Grant/Contract Number:: FG02-04ER46174

OSTI ID:: 1784334

Alternate ID(s):: OSTI ID: 1541232
OSTI ID: 1399062

Journal Information:: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 15 Vol. 119; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Quantum spin liquids Broholm, C.; Cava, R. J.; Kivelson, S. A. Science, Vol. 367, Issue 6475 https://doi.org/10.1126/science.aay0668	journal	January 2020
Spin Liquid versus Spin Orbit Coupling on the Triangular Lattice Iaconis, Jason; Liu, Chunxiao; Halász, Gábor SciPost Physics, Vol. 4, Issue 1 https://doi.org/10.21468/scipostphys.4.1.003	journal	January 2018
Frustrated Magnetism in Triangular Lattice TlYbS2 Crystals Grown via Molten Flux Ferreira, Timothy; Xing, Jie; Sanjeewa, Liurukara D. Frontiers in Chemistry, Vol. 8 https://doi.org/10.3389/fchem.2020.00127	journal	February 2020
Nearest-neighbor resonating valence bonds in YbMgGaO4 Li, Yuesheng; Adroja, Devashibhai; Voneshen, David arXiv https://doi.org/10.48550/arxiv.1704.06468	text	January 2017
Spin Liquid versus Spin Orbit Coupling on the Triangular Lattice Iaconis, Jason; Liu, Chunxiao; Halász, Gábor B. arXiv https://doi.org/10.48550/arxiv.1708.07856	text	January 2017
Quantum Magnetism in Minerals Inosov, D. S. arXiv https://doi.org/10.48550/arxiv.1806.10967	text	January 2018
Anisotropic-Exchange Magnets on a Triangular Lattice: Spin Waves, Accidental Degeneracies, and Dual Spin Liquids Maksimov, P. A.; Zhu, Zhenyue; White, Steven R. arXiv https://doi.org/10.48550/arxiv.1811.05983	text	January 2018
Quantum Spin Liquids Broholm, C.; Cava, R. J.; Kivelson, S. A. arXiv https://doi.org/10.48550/arxiv.1905.07040	text	January 2019
Resolving continua of fractional excitations by spinon echo in THz 2D coherent spectroscopy Wan, Yuan; Armitage, N. P. arXiv https://doi.org/10.48550/arxiv.1905.11420	text	January 2019

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