Local spin resonance and spin-Peierls-like phase transition in a geometrically frustrated antiferromagnet

被引：339

作者：

Lee, SH

Broholm, C

Kim, TH

Ratcliff, W

Cheong, SW

机构：

[1] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA

[2] Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA

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

[4] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[5] Univ Maryland, College Pk, MD 20742 USA

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.84.3718

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Inelastic magnetic neutron scattering reveals a localized spin resonance at 4.5 meV in the ordered phase of the geometrically frustrated cubic antiferromagnet ZnCr2O4. The resonance develops abruptly from quantum critical fluctuations upon cooling through a first order transition to a co-planar antiferromagnet at T-c = 12.5(5) K. We argue that this transition is a three dimensional analog of the spin-Peierls transition.

引用

页码：3718 / 3721

页数：4

共 27 条

[1] ORDERING AND ANTIFERROMAGNETISM IN FERRITES [J].