Magnetic Order in the Spin-1/2 Kagome Antiferromagnet Vesignieite

被引:43
作者
Yoshida, Makoto [1 ]
Okamoto, Yoshihiko [1 ]
Takigawa, Masashi [1 ]
Hiroi, Zenji [1 ]
机构
[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan
关键词
BaCu3V2O8(OH)(2); vesignieite; quantum spin system; kagome lattice; NMR; magnetic order; LATTICE;
D O I
10.7566/JPSJ.82.013702
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We report results of magnetic susceptibility and V-51- and Cu-63,Cu-65-NMR measurements on a high-quality powder sample of vesignieite BaCu3V2O8(OH)(2), a candidate for the spin-1/2 kagome antiferromagnet. We observed a two-step magnetic transition: the appearance of spatially inhomogeneous static moments below 13 K and a long-range order below 9 K. The NMR data indicate a Q = 0 magnetic structure at 1.4 K with the in-plane spin components of three sublattices oriented at nearly 120 degrees to each other and the magnitude of the ordered moments of at least 0.6 mu(B).
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页数:4
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