Heterogeneous spin state in the field-induced phase of volborthite as seen via ^<51>V nuclear magnetic resonance
Heterogeneous spin state in the field-induced phase of volborthite as seen via ^<51>V nuclear magnetic resonance
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通过 ^<51>V 核磁共振观察到伏硼铁矿场诱导相中的异质自旋态
DOI：
10.1103/physrevb.84.020410
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发表时间：
2011
影响因子：
3.7
通讯作者：
Zenji Hiroi
中科院分区：
文献类型：
--
作者：
Makoto Yoshida;Masashi Takigawa;Hiroyuki Yoshida;Yoshihiko Okamoto;Zenji Hiroi
我们报道了扭曲Kagomé晶格上的自旋1/2反铁磁体伏立石CuVO(OH)2HO的场诱导相的V-核磁共振结果。在4.5T以上的磁场中，观察到两种不同自旋回波衰减率的V位。快衰变部位的超精细场有一定的分布，而慢衰变部位的超精细场分布比较均匀。我们的结果表明，这是一种由两个空间交替的铜自旋系统组成的非均质态，其中一个系统表现出反常的自旋涨落，而另一个系统则表现出常规的静态有序。
We report results ofV NMR in the field-induced phase of volborthite CuVO(OH)2HO, a spin-1/2 antiferromagnet on a distortedkagomélattice. In magnetic fields above 4.5 T, two types of V sites with different spin-echo decay rates are observed. The hyperfine field at the fast decaying sites has a distribution, while it is more homogeneous at the slowly decaying sites. Our results indicate a heterogeneous state consisting of two spatially alternating Cu spin systems, one of which exhibits anomalous spin fluctuations contrasting with the other showing a conventional static order.