Muon Spin Relaxation Evidence for the U(1) Quantum Spin-Liquid Ground State in the Triangular AntiferromagnetYbMgGaO4

2016/07/12 by Yuesheng Li, Devashibhai Adroja, D. T. Adroja +9 · 7 citations
Materials Science · Medicine · Physics and Astronomy · #Advanced Condensed Matter Physics #Antiferromagnetism #Atomic physics #Condensed matter physics #Ground state #Magnetic and transport properties of perovskites and related materials #Medicine #Muon #Muon spin spectroscopy #Nuclear physics #Physics #Physics of Superconductivity and Magnetism #Relaxation (psychology) #Spin (aerodynamics) #Thermodynamics #cond-mat.str-el

paper · pdf · doi:10.1103/physrevlett.117.097201

published as Phys. Rev. Lett. 117, 097201 (2016) · 5 figures

arxiv created 2016/07/12 · openalex created_date 2016/07/22 · openalex publication_date 2016/08/23 · arxiv updated 2016/08/30 · openalex updated_date 2026/08/05

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.

Citations

• Pyrochlore photons: TheU(1)spin liquid in aS=12three-dimensional frustrated magnet
• Spin-wave analysis to the spatially anisotropic Heisenberg antiferromagnet on a triangular lattice
• U(1) Gauge Theory of the Hubbard Model: Spin Liquid States and Possible Application toκ−(BEDT−TTF)2Cu2(CN)3
• Transition-metal distribution in kagome antiferromagnet CoCu3(OH)6Cl2 revealed by resonant X-ray diffraction
• Spin Liquid State in an Organic Mott Insulator with a Triangular Lattice
• Theory of dynamic critical phenomena
• μSRStudy of the Quantum Dynamics in the FrustratedS=32Kagomé Bilayers

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• Cyclotron resonance inside the Mott gap: A fingerprint of emergent neutral fermions
• Antiferromagnetism and crystalline electric field excitations in tetragonal NaCeO2
• Crystalline electric field excitations in the quantum spin liquid candidate NaYbSe2
• Mechanism of the insulator-to-metal transition and superconductivity in the spin liquid candidate NaYbSe2 under pressure