Neutron scattering study of the long-range ordered state in CeRu_2Al_<10>
Neutron scattering study of the long-range ordered state in CeRu_2Al_<10>
复制标题
CeRu_2Al_<10>中长程有序态的中子散射研究
DOI：
10.1143/jpsjs.80sa.sa022
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
J.-M.Mignot
中科院分区：
文献类型：
--
作者：
T.Matsumura;T.Yonemura;K.Kunimori;M.Sera;F.Iga;山内清典,光田暁弘,石川義和,辻直人,吉村一良;J.-M.Mignot
Elastic and inelastic neutron scattering measurements have been performed on powder and single-crystal samples of orthorhombic CeRu2Al10. The order forming belowT0= 27 K was identified as a long-range antiferromagnetic state with the wave vectork= (1,0,0). The magnetic spectral response in the ordered phase, measured on powder, is characterized by a spin gap and a pronounced peak at 8 meV, whoseQdependence suggests a magnetic origin. Both features are suppressed when temperature is raised toT0, and a conventional relaxational behavior is observed at 40 K. This peculiar spin dynamics is discussed in connection with recent magnetization results for the same compound.
