arXiv Open Access 2007

17O NMR study of the intrinsic magnetic susceptibility and spin dynamics of the quantum kagome antiferromagnet ZnCu3(OH)6Cl2

A. Olariu P. Mendels F. Bert F. Duc J. C. Trombe +2 lainnya

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Abstrak

We report through 17O NMR, an unambiguous local determination of the intrinsic kagome lattice spin susceptibility as well as that created around non-magnetic defects issued from natural Zn/ Cu exchange in the S=1/2 (Cu2+) herbertsmithite ZnCu3(OH)6Cl2 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 non-frustrated antiferromagnetic materials. Finally, we discuss our relaxation measurements in the light of Cu and Cl NMR data [cond-mat 070314] and suggest a flat q-dependence of the excitations.

Topik & Kata Kunci

cond-mat.str-el

Penulis (7)

A. Olariu

P. Mendels

F. Bert

F. Duc

J. C. Trombe

M. A. de Vries

A. Harrisson

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Olariu, A., Mendels, P., Bert, F., Duc, F., Trombe, J.C., Vries, M.A.d. et al. (2007). 17O NMR study of the intrinsic magnetic susceptibility and spin dynamics of the quantum kagome antiferromagnet ZnCu3(OH)6Cl2. https://arxiv.org/abs/0711.2459

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Tahun Terbit: 2007
Bahasa: en
Sumber Database: arXiv
Akses: Open Access ✓