Muon Spin Relaxation Evidence for the U(1) Quantum Spin-Liquid Ground State in the Triangular Antiferromagnet YbMgGaO4

Yuesheng Li; Devashibhai Adroja; Pabitra K. Biswas; Peter J. Baker; Qian Zhang; Juanjuan Liu; Alexander A. Tsirlin; Philipp Gegenwart; Qingming Zhang

doi:10.1103/PhysRevLett.117.097201

Muon Spin Relaxation Evidence for the U(1) Quantum Spin-Liquid Ground State in the Triangular Antiferromagnet YbMgGaO4

Yuesheng Li, Devashibhai Adroja, Pabitra K. Biswas, Peter J. Baker, Qian Zhang, Juanjuan Liu, Alexander A. Tsirlin, Philipp Gegenwart, Qingming Zhang

Physics

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

160 Citations (Scopus)

Abstract

Muon spin relaxation (μSR) experiments on single crystals of the structurally perfect triangular antiferromagnet YbMgGaO4 indicate the absence of both static long-range magnetic order and spin freezing down to 0.048 K in a zero field. Below 0.4 K, the μ+ spin relaxation rates, which are proportional to the dynamic correlation function of the Yb3+ spins, exhibit temperature-independent plateaus. All these μSR results unequivocally support the formation of a gapless U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO4.

Original language	English
Article number	097201
Journal	Physical Review Letters
Volume	117
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevLett.117.097201
Publication status	Published - 23 Aug 2016

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Muon Spin Relaxation Evidence for the U(1) Quantum Spin-Liquid Ground State in the Triangular Antiferromagnet YbMgGaO4",

abstract = "Muon spin relaxation (μSR) experiments on single crystals of the structurally perfect triangular antiferromagnet YbMgGaO4 indicate the absence of both static long-range magnetic order and spin freezing down to 0.048 K in a zero field. Below 0.4 K, the μ+ spin relaxation rates, which are proportional to the dynamic correlation function of the Yb3+ spins, exhibit temperature-independent plateaus. All these μSR results unequivocally support the formation of a gapless U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO4.",

author = "Yuesheng Li and Devashibhai Adroja and Biswas, {Pabitra K.} and Baker, {Peter J.} and Qian Zhang and Juanjuan Liu and Tsirlin, {Alexander A.} and Philipp Gegenwart and Qingming Zhang",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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doi = "10.1103/PhysRevLett.117.097201",

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AU - Li, Yuesheng

AU - Adroja, Devashibhai

AU - Biswas, Pabitra K.

AU - Baker, Peter J.

AU - Zhang, Qian

AU - Liu, Juanjuan

AU - Tsirlin, Alexander A.

AU - Gegenwart, Philipp

AU - Zhang, Qingming

PY - 2016/8/23

Y1 - 2016/8/23

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AB - Muon spin relaxation (μSR) experiments on single crystals of the structurally perfect triangular antiferromagnet YbMgGaO4 indicate the absence of both static long-range magnetic order and spin freezing down to 0.048 K in a zero field. Below 0.4 K, the μ+ spin relaxation rates, which are proportional to the dynamic correlation function of the Yb3+ spins, exhibit temperature-independent plateaus. All these μSR results unequivocally support the formation of a gapless U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO4.

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Muon Spin Relaxation Evidence for the U(1) Quantum Spin-Liquid Ground State in the Triangular Antiferromagnet YbMgGaO4

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