NMR relaxation rate in the field-induced octupolar liquid phase of spin-1/2 J1-J2 frustrated chains
NMR relaxation rate in the field-induced octupolar liquid phase of spin-1/2 J1-J2 frustrated chains
复制标题
自旋 1/2 J1-J2 受挫链场诱导八极液相中的 NMR 弛豫率
DOI：
10.1088/1742-6596/320/1/012014
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T.Momoi
中科院分区：
文献类型：
--
作者：
M.Sato;T.Hikihara;T.Momoi
在磁场作用下，自旋为1/2且具有最近邻铁磁交换J1和次最近邻反铁磁交换J2的阻挫链中，磁性多极液体（四极、八极和十六极）相从饱和状态扩展到低场状态.最近，我们已经澄清了特征温度和场的NMR弛豫速率1/T1在四极相的依赖性。本文结合场论方法和数值计算结果，研究了八极位相中的1/T1。对PbCuSO 4（OH）2、Rb 2Cu 2 Mo 3 O 12和Li 2 ZrCuO 4等准一维J1-J2磁体的相关性进行了讨论。
In the spin-½ frustrated chain with nearest-neighbor ferromagnetic exchange J 1 and next-nearest-neighbor antiferromagnetic exchange J 2 under magnetic field, magnetic multipolar-liquid (quadrupolar, octupolar, and hexadecapolar) phases are widely expanded from the saturation down to a low-field regime. Recently, we have clarified characteristic temperature and field dependence of the NMR relaxation rate 1/T 1 in the quadrupolar phase. In this paper, we examine those of 1/T 1 in the octupolar phase combining field theoretical method with numerical data. The relevance of the results to quasi one-dimensional J 1-J 2 magnets such as PbCuSO 4 (OH) 2, Rb 2 Cu 2 Mo 3 O 12 and Li 2 ZrCuO 4 is shortly discussed.