Anomalous low temperature states in CeNi2Ge2 and CePd2Si2

被引：78

作者：

Grosche, FM ^{[1
]}

Agarwal, P ^{[1
]}

Julian, SR ^{[1
]}

Wilson, NJ ^{[1
]}

Haselwimmer, RKW ^{[1
]}

Lister, SJS ^{[1
]}

Mathur, ND ^{[1
]}

Carter, FV ^{[1
]}

Saxena, SS ^{[1
]}

Lonzarich, GG ^{[1
]}

机构：

[1] Cavevdish Lab, Cambridge CB3 OHE, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2000年 / 12卷 / 32期

关键词：

D O I：

10.1088/0953-8984/12/32/101

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

High purity samples of the paramagnetic 4f-elecuon metal CeNi2Ge2 exhibit a non-Fermi-liquid form of the resistivity Delta rho similar to T-X with x < 1.5 and decreasing towards 1 with increasing sample purity. Measurements of rho versus T as a function of magnetic field and pressure show that this strange metallic phase is connected to the proximity of an antiferromagnetic quantum critical point as in the isoelectronic relative CePd2Si2 near 2.8 GPa. The anomalous power-law dependence is surprisingly stable over extended ranges in temperature and pressure and challenges current theory of magnetic quantum phase transitions.

引用

页码：L533 / L540

页数：8

共 37 条

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