Evidence for appearance of an internal field in the ordered state of CeRu2Al10 byμ+SR
Evidence for appearance of an internal field in the ordered state of CeRu2Al10 byμ+SR
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μ+SR 证明 CeRu2Al10 有序态内场出现的证据
DOI：
10.1143/jpsj.79.053708
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
J.
中科院分区：
文献类型：
--
作者：
S. Kambe;H. Chudo;Y. Tokunaga;T. Koyama;H. Sakai;T. U. Ito;N. Kazuhiko;W. Higemoto;T. Takesaka;T. Nishioka and Y. Miyake;J.
我们报告了在J-PARC对CeRu 2Al 10进行的零场µ+SR测量。在相变温度T0 ~ 27 K以下，观察到由于内场引起的μ+极化的明显调制，表明发生了磁有序。与无序状态下的有效磁矩预期的内场相比，在µ+位置观察到的内场相当小。这表明有序的Ce磁矩很小（~ 10-2μB）和/或最近的Ce磁矩对相互反平行。内场的T依赖性有些特殊，这表明另一种有序也在发生。
We report zero-field µ+SR measurements made at J-PARC on CeRu2Al10. Below the phase transition temperatureT0∼27 K, a clear modulation of µ+polarization due to an internal field is observed, indicating that magnetic ordering takes place. Compared with the internal field expected from the effective magnetic moment in the disordered state, the observed internal field at the µ+site is quite small. This indicates that the ordered Ce magnetic moment is small (∼10-2µB) and/or the nearest pair of Ce magnetic moments are mutually anti-parallel. TheT-dependence of the internal field is somewhat peculiar, suggesting that another ordering is taking place as well.