High-pressure effect on the electronic state in CeNiGe3:: pressure-induced superconductivity

被引：59

作者：

Nakashima, M ^{[1
]}

Tabata, K

Thamizhavel, A

Kobayashi, TC

Hedo, M

Uwatoko, Y

Shimizu, K

Settai, R

Onuki, Y

机构：

[1] Osaka Univ, Grad Sch Sci, Toyonaka, Osaka 5600043, Japan

[2] Osaka Univ, Res Ctr Mat Extreme Condit, Toyonaka, Osaka 5608531, Japan

[3] Okayama Univ, Fac Sci, Dept Phys, Okayama 7008530, Japan

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

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2004年 / 16卷 / 20期

关键词：

D O I：

10.1088/0953-8984/16/20/L01

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have measured the electrical resistivity of an antiferromagnetic Kondo compound CeNiGe3 under pressure. The Neel temperature initially increases with pressure P up to 3 GPa, then decreases rather steeply with further increasing pressure, and becomes zero at a critical pressure P-c similar or equal to 5.5 GPa. The A and rho(0) values of the resistivity rho = rho(0) + AT(2) in the Fermi liquid relation become maximum around P, the A value attaining an extremely large value which is comparable with that in a heavy fermion superconductor CeCu2Si2-Superconductivity is found below 0.48 K in a wide pressure region from 4 to 10 GPa. The upper critical field Hc(2) (0) is about 2 T, indicating heavy fermion superconductivity.

引用

页码：L255 / L262

页数：8

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