Local Spin Susceptibility of the S=1/2 Kagome Lattice in ZnCu3(OD)6Cl2

Abstract

We report single-crystal 2-D NMR investigation of the nearly ideal spin S=1/2 kagome lattice ZnCu3(OD)6Cl2. We successfully identify 2-D NMR signals originating from the nearest-neighbors of Cu2+ defects occupying Zn sites. From the 2-D Knight shift measurements, we demonstrate that weakly interacting Cu2+ spins at these defects cause the large Curie-Weiss enhancement toward T=0 commonly observed in the bulk susceptibility data. We estimate the intrinsic spin susceptibility of the kagome planes by subtracting defect contributions, and explore several scenarios.

4 figures; published in PR-B Rapid Communications

References in corpus (9)

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• Properties of an algebraic spin liquid on the kagome lattice
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• Magnetic Susceptibility of the Kagome Antiferromagnet ZnCu3(OH)6Cl2

Cited by in corpus (15)

• The Chemistry of Quantum Spin Liquids
• Symmetry Reduction in the Quantum Kagome Antiferromagnet Herbertsmithite
• Emergence of spin singlets with inhomogeneous gaps in the kagome Heisenberg antiferromagnets Zn-barlowite and herbertsmithite
• Spin excitations of a proximate Kitaev quantum spin liquid realized in Cu${}_2$IrO${}_3$
• Heat Transport in Herbertsmithite: Can a Quantum Spin Liquid Survive Disorder?
• The observation of quantum fluctuations in a kagome Heisenberg antiferromagnet
• Low-energy behavior of spin-liquid electron spectral functions
• Freezing of the Lattice in the Kagome Lattice Heisenberg Antiferromagnet Zn-barlowite ZnCu${}_3$(OD)${}_6$FBr
• Nuclear relaxation rates in the Herbertsmithite Kagome antiferromagnets ZnCu3(OH)6Cl2
• NMR evidence of spinon localization in kagome antiferromagnet YCu${}_3$(OH)${}_6$Br${}_2$[Br${}_{1-x}$(OH)${}_x$]
• Local evidence for collective spin excitations in the distorted kagome antiferromagnet Pr${}_3$BWO${}_9$
• Combinatorial exploration of quantum spin liquid candidates in the herbertsmithite material family
• Spinon mediation of witness spin dynamics in herbertsmithite
• Spin Liquid Mimicry in the Hydroxide Double Perovskite CuSn(OH)${}_6$ Induced by Correlated Proton Disorder
• Local probe investigation of the spin dynamics in the kagome and inter-layers of orthorhombic barlowite Cu${}_4$(OD)${}_6$FBr: ${}^{79}$Br and ${}^{63}$Cu NQR study