17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3 OH 6 Cl2

Aretha Olariu; Philippe Mendels; Fabrice Bert; Fabienne Duc; Mark A. de Vries; Andrew Harrison

doi:10.1103/PhysRevLett.100.087202

17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3 OH 6 Cl2

Aretha Olariu, Philippe Mendels, Fabrice Bert, Fabienne Duc, Mark A. de Vries, Andrew Harrison

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

Abstract

We report, through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around nonmagnetic defects arising from natural Zn/Cu exchange in the S=1/2 (Cu2+) herbertsmithite ZnCu3 OH 6 Cl2 compound. The issue of a singlet–triplet gap is addressed. The magnetic response around a defect is found to markedly differ from that observed in nonfrustrated antiferromagnets. Finally, we discuss our relaxation measurements in the light of Cu and Cl NMR data and suggest a flat q dependence of the excitations.

Original language	English
Article number	087202
Pages (from-to)	-
Number of pages	4
Journal	Physical Review Letters
Volume	100
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.100.087202
Publication status	Published - 28 Feb 2008

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http://prl.aps.org/abstract/PRL/v100/i8/e087202

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title = "17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3 OH 6 Cl2",

abstract = "We report, through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around nonmagnetic defects arising from natural Zn/Cu exchange in the S=1/2 (Cu2+) herbertsmithite ZnCu3 OH 6 Cl2 compound. The issue of a singlet–triplet gap is addressed. The magnetic response around a defect is found to markedly differ from that observed in nonfrustrated antiferromagnets. Finally, we discuss our relaxation measurements in the light of Cu and Cl NMR data and suggest a flat q dependence of the excitations. ",

author = "Aretha Olariu and Philippe Mendels and Fabrice Bert and Fabienne Duc and \{de Vries\}, \{Mark A.\} and Andrew Harrison",

note = "1.Olariu, A. et al. 17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3(OH)6Cl2. Phys. Rev. Lett. 100, 087202–4 (2008). ",

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T1 - 17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3 OH 6 Cl2

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AU - Duc, Fabienne

AU - de Vries, Mark A.

AU - Harrison, Andrew

N1 - 1.Olariu, A. et al. 17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3(OH)6Cl2. Phys. Rev. Lett. 100, 087202–4 (2008).

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N2 - We report, through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around nonmagnetic defects arising from natural Zn/Cu exchange in the S=1/2 (Cu2+) herbertsmithite ZnCu3 OH 6 Cl2 compound. The issue of a singlet–triplet gap is addressed. The magnetic response around a defect is found to markedly differ from that observed in nonfrustrated antiferromagnets. Finally, we discuss our relaxation measurements in the light of Cu and Cl NMR data and suggest a flat q dependence of the excitations.

AB - We report, through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around nonmagnetic defects arising from natural Zn/Cu exchange in the S=1/2 (Cu2+) herbertsmithite ZnCu3 OH 6 Cl2 compound. The issue of a singlet–triplet gap is addressed. The magnetic response around a defect is found to markedly differ from that observed in nonfrustrated antiferromagnets. Finally, we discuss our relaxation measurements in the light of Cu and Cl NMR data and suggest a flat q dependence of the excitations.

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17O NMR Study of the Intrinsic Magnetic Susceptibility and Spin Dynamics of the Quantum Kagome Antiferromagnet ZnCu3 OH 6 Cl2

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