63Cu, 35Cl, and 1H NMR in the S=1/2 Kagome lattice ZnCu3(OH)6Cl2

被引：134

作者：

Imai, T. ^{[1
,2
]}

Nytko, E. A. ^{[3
]}

Bartlett, B. M. ^{[3
]}

Shores, M. P. ^{[3
]}

Nocera, D. G. ^{[3
]}

机构：

[1] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

[2] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

[3] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.100.077203

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

ZnCu3(OH)(6)Cl-2 (S=1/2) is a promising new candidate for an ideal Kagome Heisenberg antiferromagnet, because there is no magnetic phase transition down to similar to 50 mK. We investigated its local magnetic and lattice environments with NMR techniques. We demonstrate that the intrinsic local spin susceptibility decreases toward T=0, but that slow freezing of the lattice near similar to 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.

引用

页数：4

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