Magnetic Field and Temperature Dependence of X-ray Superlattice Intensity in Multipole Ordered Phase of Pr(Ru_<1-x>Rh_x)_4P_<12>(x=0,0.03)
Magnetic Field and Temperature Dependence of X-ray Superlattice Intensity in Multipole Ordered Phase of Pr(Ru_<1-x>Rh_x)_4P_<12>(x=0,0.03)
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Pr(Ru_<1-x>Rh_x)_4P_<12>(x=0,0.03)多极有序相中X射线超晶格强度的磁场和温度依赖性
DOI：
10.1143/jpsjs.80sa.sa026
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Youichi Murakami
中科院分区：
文献类型：
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作者：
Kotaro Saito;Kazuaki Iwasa;Lijie Hao;Hironori Nakao;Youichi Murakami
用同步辐射x射线散射技术测量了PrRu4P12和Pr(Ru0.97Rh0.03)4P12多极有序相中的超晶格反射。在1.7K时，(111)面的汤姆逊散射强度在7T以下随磁场变化不明显，与已报道的电阻率变化相反。这意味着有序相中的晶格畸变很强，并且在Pr位的一半处三重态分裂后仍保持交错有序。外加磁场并不能完全破坏非金属交错有序。在Pr(Ru0.97Rh0.03)4P12的(111)反射处的能量扫描显示了PrL3边的共振能量附近的温度依赖关系。这可能使我们能够观察到Pr位电子有序的各向异性，并为直接观察PrRu4P12中更高阶的多极有序提供了线索。
Superlattice reflections in the multipole ordered phase of PrRu4P12and Pr(Ru0.97Rh0.03)4P12has been measured using a synchrotron x-ray scattering technique. The Thomson scattering intensity of (111) at 1.7 K does not show significant variation with magnetic field up to 7 T in contrast to the reported variation of electrical resistivity. This means that the lattice distortion in the ordered phase is robust and the staggered ordering remains after split of triplet ground state at half of Pr sites. The nonmetallic staggered ordering is not destroyed completely by applying magnetic field. Energy scan at (111) reflection of Pr(Ru0.97Rh0.03)4P12show temperature dependence around resonant energy of PrL3edge. This may allow us to observe anisotropy of electronic ordering of Pr sites and gives us a hint for direct observation of higher rank multipole order in PrRu4P12.