Dynamic fields in the partial magnetization plateau of Ca 3 Co 2 O 6
Dynamic fields in the partial magnetization plateau of Ca 3 Co 2 O 6
复制标题
Ca 3 Co 2 O 6 部分磁化平台的动态场
DOI：
10.1088/0953-8984/23/30/306001
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发表时间：
2011
期刊：
影响因子：
1.7
通讯作者：
Baker P
中科院分区：
文献类型：
--
作者：
Baker P
磁化平台中的波动动力学是阻挫磁性中相对较少探索的领域。在这里，我们使用μ子自旋弛豫，以确定在部分磁化平台的Ca{sub 3}Co{sub 2}O{sub 6}的波动时间尺度和相关的场分布宽度。μ子自旋弛豫速率具有简单而特征的场依赖性，我们对此进行了建模，并通过拟合15 K下的数据，我们提取了波动时标{tau} 880（30）ps和场分布宽度{Delta} = 40.6（3）mT。与以往Ca{sub 3}Co{sub 2}O{sub 6}的结果比较表明，这种波动的时间尺度可以与短程，缓慢波动的磁序。
Fluctuation dynamics in magnetization plateaus is a relatively poorly explored area in frustrated magnetism. Here we use muon spin relaxation to determine the fluctuation timescale and associated field distribution width in the partial magnetization plateau of Ca{sub 3}Co{sub 2}O{sub 6}. The muon spin relaxation rate has a simple and characteristic field dependence which we model and, by fitting to the data at 15 K, we extract a fluctuation timescale {tau} 880(30) ps and a field distribution width {Delta} = 40.6(3) mT. Comparison with previous results on Ca{sub 3}Co{sub 2}O{sub 6} suggests that this fluctuation timescale can be associated with short-range, slowly fluctuating magnetic order.