2005/05/05 by Kazuaki Iwasa, Lijie Hao, Tomoo Hasegawa +12 · 1 citation
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Magnetic Properties of Alloys #Rare-earth and actinide compounds #cond-mat.str-el
paper · pdf · doi:10.1143/jpsj.74.1930
5 pages, 5 figures. Accepted by J. Phys. Soc. Jpn
arxiv created 2005/05/05 · openalex publication_date 2005/07/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Electronic state evolution in the metal-non-metal transition of PrRu4P12 has been studied by X-ray and polarized neutron diffraction experiments. It has been revealed that, in the low-temperature non-metallic phase, two inequivalent crystal-field (CF) schemes of Pr3+ 4f2 electrons with Gamma1 and Gamma4^(2) ground states are located at Pr1 and Pr2 sites forming the bcc unit cell surrounded by the smaller and larger cubic Ru-ion sublattices, respectively. This modulated electronic state can be explained by the p-f hybridization mechanism taking two intermediate states of 4f1 and 4f3. The p-f hybridization effect plays an important role for the electronic energy gain in the metal-non-metal transition originated from the Fermi surface nesting.