标题： f-电子-核超精细耦合多重态在填充Skutterudite PrRu4P12的非常规电荷有序相中的表现 显示英文标题

标题： f-Electron-Nuclear Hyperfine-Coupled Multiplets in the Unconventional Charge Order Phase of Filled Skutterudite PrRu4P12

摘要： 在填充skutterudite PrRu4P12的非常规f电子关联电荷有序相中，通过使用高质量单晶的比热和磁化率测量研究了Pr离子三重晶格电场基态的低温行为。 比热在零场下0.30 K处表现出异常的肖特基型峰结构，尽管没有任何对称性破缺。 在0.06 K下的磁化率曲线在1 T以下表现出显著的平滑。已经证实这些异常为Pr 4f电子-核超精细耦合多重态晶格的形成提供了有力证据，这是首次已知的此类热力学观测。 显示英文摘要

摘要： In the unconventional f-electron-associated charge order phase of filled skutterudite PrRu4P12, the low-temperature behaviors of the triplet crystalline-electric-field ground state of Pr ions have been studied by specific heat and magnetization measurements using high quality single crystals. Specific heat shows an anomalous Schottky-type peak structure at 0.30 K in zero field in spite of the absence of any symmetry breaking. Magnetization curve at 0.06 K shows a remarkable rounding below 1 T. It has been revealed that these anomalies provide compelling evidence for the formation of a lattice of Pr 4f-electron-nuclear hyperfine-coupled multiplets, the first known thermodynamical observation of its kind.