Pressure-induced metal-insulator transition in the filled skutterudite PrFe4P12 -: art. no. 073102

被引：38

作者：

Hidaka, H ^{[1
]}

Ando, I

Kotegawa, H

Kobayashi, TC

Harima, H

Kobayashi, M

Sugawara, H

Sato, H

机构：

[1] Okayama Univ, Dept Phys, Okayama 7008530, Japan

[2] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan

[3] Kobe Univ, Dept Phys, Nada Ku, Kobe, Hyogo 6578501, Japan

[4] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan

[5] Univ Tokushima, Fac Integrated Arts & Sci, Tokushima 7708502, Japan

来源：

PHYSICAL REVIEW B | 2005年 / 71卷 / 07期

关键词：

D O I：

10.1103/PhysRevB.71.073102

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the electrical resistivity of the filled skutterudite compound PrFe4P12 under high pressure. The antiferroquadrupolar ordering temperature T-Q decreases monotonically with increasing pressure up to 2.4 GPa. Above 2.4 GPa, we have found that a metal-insulator (M-I) transition appears. The insulating state is easily suppressed by a magnetic field. The observed Kondo effect and a field-induced heavy-fermion state at high pressure suggest that the quadrupolar interactions survive in the insulating region. The quadrupolar interactions might play an essential role in the M-I transition. PrFe4P12 is an unusual compound in that it shows a pressure-induced transition from a metal to an insulator.

引用

页数：4

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