NMR study of the heavy-fermion alloy Ce(Cu1-xNix)(2)Ge-2

被引：37

作者：

Buttgen, N

Bohmer, R

Krimmel, A

Loidl, A

机构：

[1] Institut für Festkörperphysik, Technische Hochschule Darmstadt

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.53.5557

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A detailed Cu-63 NMR investigation is presented for the heavy-fermion system Ce(Cu1-xNix)(2)Ge-2, focusing especially on the alloying induced transition from magnetic order to pure Kondo-like behavior. The broadening of the resonance line and the temperature dependence of the spin-lattice relaxation rate 1/T-1 are studied in full detail. We provide experimental evidence for the appearance of heavy-fermion band magnetism for concentrations x=0.6 and x=0.7. For x=0.8 the spin-lattice relaxation rate 1/T-1 follows a logarithmic temperature dependence which we interpret as a fingerprint of a non-Fermi-liquid behavior. Finally, 1/T-1 is compared to the dynamic structure factor S(Q,omega) as determined in inelastic-neutron-scattering experiments.

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收藏

页码：5557 / 5562

页数：6

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