Evolution of 4f electron states in the metal-insulator transition of Pr Ru4 P12

Kazuaki Iwasa; Lijie Hao; Keitaro Kuwahara; Masahumi Kohgi; Shanta Ranjan Saha; Hitoshi Sugawara; Yuji Aoki; Hideyuki Sato; Takashi Tayama; Toshiro Sakakibara

doi:10.1103/PhysRevB.72.024414

Evolution of 4f electron states in the metal-insulator transition of Pr Ru4 P12

Kazuaki Iwasa^*, Lijie Hao, Keitaro Kuwahara, Masahumi Kohgi, Shanta Ranjan Saha, Hitoshi Sugawara, Yuji Aoki, Hideyuki Sato, Takashi Tayama, Toshiro Sakakibara

^*この論文の責任著者

物理学科

研究成果: ジャーナルへの寄稿 › 学術論文 › 査読

88 被引用数 (Scopus)

抄録

Magnetic excitations of the filled skutterudite Pr Ru4 P12 exhibiting a metal-insulator (M-I) transition at TM-I =63 K were studied by inelastic neutron scattering experiment. The spectra at temperatures much lower than TM-I are described as well-defined crystal-field excitations. With approaching TM-I, the excitation peaks broaden and shift considerably together with the temperature variation of the carrier number and the atomic displacement in the transition. The 4f electron states evolve from the well-localized state in the insulator phase to the strongly hybridized itinerant state by p-f mixing near TM-I. The hybridization is responsible for the M-I transition of Pr Ru4 P12.

本文言語	英語
論文番号	024414
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	72
号	2
DOI	https://doi.org/10.1103/PhysRevB.72.024414
出版ステータス	出版済み - 2005/07/01

ASJC Scopus 主題領域

電子材料、光学材料、および磁性材料
凝縮系物理学

文献へのアクセス

10.1103/PhysRevB.72.024414

引用スタイル

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title = "Evolution of 4f electron states in the metal-insulator transition of Pr Ru4 P12",

abstract = "Magnetic excitations of the filled skutterudite Pr Ru4 P12 exhibiting a metal-insulator (M-I) transition at TM-I =63 K were studied by inelastic neutron scattering experiment. The spectra at temperatures much lower than TM-I are described as well-defined crystal-field excitations. With approaching TM-I, the excitation peaks broaden and shift considerably together with the temperature variation of the carrier number and the atomic displacement in the transition. The 4f electron states evolve from the well-localized state in the insulator phase to the strongly hybridized itinerant state by p-f mixing near TM-I. The hybridization is responsible for the M-I transition of Pr Ru4 P12.",

author = "Kazuaki Iwasa and Lijie Hao and Keitaro Kuwahara and Masahumi Kohgi and Saha, {Shanta Ranjan} and Hitoshi Sugawara and Yuji Aoki and Hideyuki Sato and Takashi Tayama and Toshiro Sakakibara",

year = "2005",

month = jul,

day = "1",

doi = "10.1103/PhysRevB.72.024414",

language = "英語",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

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T1 - Evolution of 4f electron states in the metal-insulator transition of Pr Ru4 P12

AU - Iwasa, Kazuaki

AU - Hao, Lijie

AU - Kuwahara, Keitaro

AU - Kohgi, Masahumi

AU - Saha, Shanta Ranjan

AU - Sugawara, Hitoshi

AU - Aoki, Yuji

AU - Sato, Hideyuki

AU - Tayama, Takashi

AU - Sakakibara, Toshiro

PY - 2005/7/1

Y1 - 2005/7/1

N2 - Magnetic excitations of the filled skutterudite Pr Ru4 P12 exhibiting a metal-insulator (M-I) transition at TM-I =63 K were studied by inelastic neutron scattering experiment. The spectra at temperatures much lower than TM-I are described as well-defined crystal-field excitations. With approaching TM-I, the excitation peaks broaden and shift considerably together with the temperature variation of the carrier number and the atomic displacement in the transition. The 4f electron states evolve from the well-localized state in the insulator phase to the strongly hybridized itinerant state by p-f mixing near TM-I. The hybridization is responsible for the M-I transition of Pr Ru4 P12.

AB - Magnetic excitations of the filled skutterudite Pr Ru4 P12 exhibiting a metal-insulator (M-I) transition at TM-I =63 K were studied by inelastic neutron scattering experiment. The spectra at temperatures much lower than TM-I are described as well-defined crystal-field excitations. With approaching TM-I, the excitation peaks broaden and shift considerably together with the temperature variation of the carrier number and the atomic displacement in the transition. The 4f electron states evolve from the well-localized state in the insulator phase to the strongly hybridized itinerant state by p-f mixing near TM-I. The hybridization is responsible for the M-I transition of Pr Ru4 P12.

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U2 - 10.1103/PhysRevB.72.024414

DO - 10.1103/PhysRevB.72.024414

M3 - 学術論文

AN - SCOPUS:33644964718

SN - 1098-0121

VL - 72

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 2

M1 - 024414

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Evolution of 4f electron states in the metal-insulator transition of Pr Ru4 P12

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