Instabilities of Spin-Liquid States in a Quantum Kagome Antiferromagnet

Abstract

The emergent behavior of spin liquids that are born out of geometrical frustration makes them an intriguing state of matter. We show that in the quantum kagome antiferromagnet ZnCu${}_3$(OH)${}_6$SO${}_4$ several different correlated, yet fluctuating states exist. By combining complementary local-probe techniques with neutron scattering, we discover a crossover from a critical regime into a gapless spin-liquid phase with decreasing temperature. An additional unconventional instability of the latter phase leads to a second, distinct spin-liquid state that is stabilized at the lowest temperatures. We advance such complex behavior as a feature common to different frustrated quantum magnets.

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Cited by in corpus (23)

• Herbertsmithite and the Search for the Quantum Spin Liquid
• $\mu$SR evidence for the U(1) quantum spin liquid ground state in the triangular antiferromagnet YbMgGaO${}_4$
• Quantum Magnetism in Minerals
• Nature of the randomness-induced quantum spin liquids in two dimensions
• Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite
• Experimental signatures of quantum and topological states in frustrated magnetism
• Coexistence of magnetic order and persistent spin dynamics in a quantum kagome antiferromagnet with no intersite mixing
• Randomness-induced quantum spin liquid behavior in the s=1/2 random J1-J2 Heisenberg antiferromagnet on the honeycomb lattice
• Persistent low-temperature spin dynamics in the mixed-valence iridate Ba${}_3$InIr${}_2$O${}_9$
• Heat Transport in Herbertsmithite: Can a Quantum Spin Liquid Survive Disorder?
• Local study of the insulating quantum kagome antiferromagnets YCu3(OH)6OxCl3-x (x=0,1/3)
• Kondo screening in a charge-insulating spinon metal
• Field-Induced Instability of a Gapless Spin Liquid with a Spinon Fermi Surface
• NMR study of the spin excitations in the frustrated antiferromagnet Yb(BaBO${}_3$)${}_3$ with a triangular lattice
• $\mu$SR Insight into the Impurity Problem in Quantum Kagome Antiferromagnets
• Dynamical spin correlations of the kagome antiferromagnet
• Vanishing Wilson ratio as the hallmark of quantum spin-liquid models
• Quantum magnetisms in uniform triangular lattices Li2AMo3O8 (A = In, Sc)
• Dynamic Spin Fluctuations in the Frustrated Spin Chain Compound Li${}_3$Cu${}_2$SbO${}_6$
• Canted Antiferromagnetic Order in the Kagome Material Sr-Vesignieite
• Similarity of thermodynamic properties of Heisenberg model on triangular and kagome lattices
• Magnetic inhomogeneity in the copper pseudochalcogenide CuNCN
• Pressure-tuned spin chains in brochantite, Cu${}_4$SO${}_4$(OH)${}_6$