Role of p-f hybridization in the metal-nonmetal transition of PrRu4P12
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概要
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Electronic state evolution in the metal-nonmetal transition of PrRu_4P_<12> 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 Pr^<3+>4f^2 electrons with Γ_1 and Γ^<(2)>_4 ground states are located at Pr1 and Pr2 sites forming the bcc unit cell surrounded by the smaller and larger cubic Ruion sublattices, respectively. This modulated electronic state can be explained by the p-f hybridization mechanism taking two intermediate states of 4f^1 and 4f^3. 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.
- 一般社団法人日本物理学会の論文
- 2005-07-15
著者
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HASEGAWA Tomoo
Department of Physics, Tohoku University
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Hao Lijie
Department Of Physics Tohoku University
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Takagi T
Department Of Applied Physics Faculty Of Engineering Fukui University
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Hasegawa Tomoo
Department Of Physics Tohoku University:(present Office)bridgestone Corporation
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Aoki Y
Department Of Applied Chemistry Faculty Of Engineering Saitama University
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Iwasa Kazuaki
Department Of Physics Faculty Of Science And Technology Keio University
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Horiuchi K
Department Of Environmental Science Faculty Of Human Life And Environmental Science Kochi Women&apos
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Sato H
Department Of Analytical Chemistry Faculty Of Engineering Yokohama National University
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Mori Y
Department Of Biochemistry Tokyo College Of Pharmacy
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Murakami Y
Department Of Applied Chemistry School Of Engineering Nagoya University
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Kohgi M
Department Of Physics Faculty Of Science Tohoku University
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Sugawara H
Department Of Electronic Engineering Graduate School Of Engineering Tohoku University
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Kuwahara K
Department Of Electrical Engineering Hiroshima-denki Institute Of Technology
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Saha SR
Muon Science Laboratory, Institute of Material Structure Science, High Energy Accelerator Research Organization
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