Role of p-f hybridization in the metal-nonmetal transition of PrRu4P12
Electronic state evolution in the metal-nonmetal transition of PrRu4P12 has been studied by X-ray and polarized neutron diffraction experiments. It has been revealed that, in the low-temperature nonmetallic phase, two inequivalent crystal-field (CF) schemes of Pr3+ 4f2 electrons with Γ1 and Γ4(2) gr...
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Published in: | Journal of the Physical Society of Japan Vol. 74; no. 7; pp. 1930 - 1933 |
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Main Authors: | , , , , , , , , , , , , |
Format: | Journal Article |
Language: | English |
Published: |
Tokyo
Institute of Pure and Applied Physics
01-07-2005
Physical Society of Japan The Physical Society of Japan |
Subjects: | |
Online Access: | Get full text |
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Summary: | Electronic state evolution in the metal-nonmetal transition of PrRu4P12 has been studied by X-ray and polarized neutron diffraction experiments. It has been revealed that, in the low-temperature nonmetallic phase, two inequivalent crystal-field (CF) schemes of Pr3+ 4f2 electrons with Γ1 and Γ4(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 in the electronic energy gain in the metal-nonmetal transition originated from the Fermi surface nesting. |
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ISSN: | 0031-9015 1347-4073 |
DOI: | 10.1143/jpsj.74.1930 |