Evolution of 4f electron states in the metal-insulator transition of PrRu4P12 -: art. no. 024414

被引：81

作者：

Iwasa, K ^{[1
]}

Hao, LJ

Kuwahara, K

Kohgi, M

Saha, SR

Sugawara, H

Aoki, Y

Sato, H

Tayama, T

Sakakibara, T

机构：

[1] Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[2] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

[3] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

来源：

PHYSICAL REVIEW B | 2005年 / 72卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.72.024414

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic excitations of the filled skutterudite PrRu4P12 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 PrRu4P12.

引用

页数：5

共 23 条

[1] LINE-WIDTH OF CRYSTAL-FIELD EXCITATIONS IN METALLIC RARE-EARTH SYSTEMS [J].