Spin fluctuations in a magnetically frustrated metal LiV2O4

被引：80

作者：

Lee, SH ^{[1
]}

Qiu, Y

Broholm, C

Ueda, Y

Rush, JJ

机构：

[1] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[2] Natl Inst Stand & Technol, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[3] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[4] Univ Tokyo, Inst Solid State Phys, Minato Ku, Tokyo 106, Japan

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.86.5554

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic neutron scattering is used to characterize spin Fluctuations in the d-electron heavy fermion spinel LiV2O4. The spin-relaxation rate, Gamma (Q), for Q = 0.6 Angstrom (-1) is 1.4(3) meV at low temperatures and increases linearly with temperature at a rate of 0.46(8)k(8). There is antiferromagnetic short-range order at low temperatures with a characteristic wave vector Q(c) = 0.64(2) Angstrom (-1) and a correlation length of 6(1) Angstrom. While warming shifts intensity towards lower Q, the staggered susceptibility peaks at a finite wave vector for T < 80 K. The data are compared with conventional heavy fermion systems, geometrically frustrated insulating magnets, and recent theories for LiV2O4.

引用

页码：5554 / 5557

页数：4

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