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arXiv · 1105.2199

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

Yuji Aoki·Takahiro Namiki·Shanta R. Saha·Takashi Tayama·Toshiro Sakakibara·Ryousuke Shiina·Hiroyuki Shiba·Hitoshi Sugawara·Hideyuki Sato
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Abstract

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.

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Yuji Aoki, Takahiro Namiki, Shanta R. Saha, Takashi Tayama, Toshiro Sakakibara, Ryousuke Shiina, Hiroyuki Shiba, Hitoshi Sugawara, Hideyuki Sato. 2011-05-11. f-Electron-Nuclear Hyperfine-Coupled Multiplets in the Unconventional Charge Order Phase of Filled Skutterudite PrRu4P12. https://doi.org/10.1143/jpsj.80.054704

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