2011/04/25 by Yuji Aoki, Takahiro Namiki, Shanta R. Saha +7 · 15 citations
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Charge (physics) #Condensed matter physics #Electrical resistivity and conductivity #Electron #Ground state #Hyperfine structure #Iron-based superconductors research #Magnetic field #Magnetization #Materials science #Nuclear physics #Phase (matter) #Phase transition #Physics #Rare-earth and actinide compounds #Skutterudite #Spin (aerodynamics) #Thermodynamics #cond-mat.mtrl-sci #cond-mat.str-el #physics.atom-ph
paper · pdf · open access · doi:10.1143/jpsj.80.054704
published in Journal of the Physical Society of Japan 80(5), 054704 (Physical Society of Japan) · 14 pages, 5 figures; selected as "Papers of Editors' Choice"
openalex publication_date 2011/04/25 · arxiv created 2011/05/11 · arxiv updated 2011/05/12 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.