Magnetic-field-induced instability of the cooperative paramagnetic state in ZnxCo4－x(OD)6Cl2
Magnetic-field-induced instability of the cooperative paramagnetic state in ZnxCo4－x(OD)6Cl2
复制标题
ZnxCo4－x(OD)6Cl2 中合作顺磁态的磁场诱导不稳定性
DOI：
10.1103/physrevb.85.174435
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发表时间：
2012
影响因子：
3.7
通讯作者：
and S.-H. Lee
中科院分区：
文献类型：
--
作者：
S. E. Dissanayake;C. Chan;S. Ji;J. Lee;Y. Qiu;K. C. Rule;B. Lake;M. Green;M. Hagihala;X. G. Zheng;T. K. Ng;and S.-H. Lee
利用弹性和非弹性中子散射技术，在外加和不加外加磁场的情况下，研究了ZnCo(OD)Cl()的磁基态。我们的结果表明，基态是一个磁性长程有序(LRO)态，其中每个四面体形成一个“伞形”结构。另一方面，对于，在1.5K以下没有观察到静态有序化，这类似于在等结构量子系统中发现的行为。然而，当应用磁场时，系统会发展成与相同的LRO状态。这表明无序态在有序态附近。
Using elastic and inelastic neutron scattering techniques with and without application of an external magnetic field, the magnetic ground states of ZnCo(OD)Cl() were studied. Our results show that for, the ground state is a magnetic long-range ordered (LRO) state where each tetrahedron forms an “umbrella”-type structure. On the other hand, for, no static ordering was observed down to 1.5 K, which resembles the behavior found in the isostructural quantum system ZnCu(OD)Cl. Whenfield is applied, however, thesystem develops the same LRO state as. This indicates that thedisordered state is in the vicinity of theordered state.