Spin fluctuations and non-Fermi-liquid behavior of CeNi2Ge2 -: art. no. 140402

被引：21

作者：

Kadowaki, H ^{[1
]}

Fåk, B

Fukuhara, T

Maezawa, K

Nakajima, K

Adams, MA

Raymond, S

Flouquet, J

机构：

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

[2] CEA Grenoble, DSM, DRFMC, SPSMS, F-38054 Grenoble, France

[3] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 0QX, Oxon, England

[4] Toyama Prefectural Univ, Dept Liberal Arts & Sci, Toyama 9390398, Japan

[5] Univ Tokyo, NSL, ISSP, Tokai, Ibaraki 3191106, Japan

来源：

PHYSICAL REVIEW B | 2003年 / 68卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.68.140402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron scattering shows that non-Fermi-liquid behavior of the heavy-fermion compound CeNi2Ge2 is brought about by the development of low-energy spin fluctuations with an energy scale of 0.6 meV. They appear around the antiferromagnetic wave vectors (1/21/20) and (003/4) at low temperatures, and coexist with high-energy spin fluctuations with an energy scale of 4 meV and a modulation vector (0.23,0.23,1/2). This unusual energy dependent structure of Imchi(Q,E) in Q space suggests that quasiparticle bands are important.

引用

页数：4

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