^{63}Cu, ^{35}Cl, and ^{1}H NMR in the S=1/2 Kagomé Lattice ZnCu_{3}(OH)_{6}Cl_{2}

T. Imai; E. A. Nytko; B. M. Bartlett; M. P. Shores; D. G. Nocera

doi:10.1103/PhysRevLett.100.077203

paper

^{63}Cu, ^{35}Cl, and ^{1}H NMR in the S=1/2 Kagomé Lattice ZnCu_{3}(OH)_{6}Cl_{2}

arXiv:cond-mat/0703141 · doi:10.1103/PhysRevLett.100.077203

Abstract

ZnCu $_{3}$ (OH) $_{6}$ Cl $_{2}$ ( $S = 1/2$ ) is a promising new candidate for an ideal Kagomé Heisenberg antiferromagnet, because there is no magnetic phase transition down to $\sim$ 50 mK. We investigated its local magnetic and lattice environments with NMR techniques. We demonstrate that the intrinsic local spin susceptibility {\it decreases} toward T=0, but that slow freezing of the lattice near $\sim$ 50 K, presumably associated with OH bonds, contributes to a large increase of local spin susceptibility and its distribution. Spin dynamics near T=0 obey a power-law behavior in high magnetic fields.

Phys. Rev. Lett. (in press)

References in corpus (1)

Magnetic Susceptibility of the Kagome Antiferromagnet ZnCu3(OH)6Cl2

^{63}Cu, ^{35}Cl, and ^{1}H NMR in the S=1/2 Kagomé Lattice ZnCu_{3}(OH)_{6}Cl_{2}

Abstract

References in corpus (1)

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