SPIN-WAVE ENERGY DISPERSION IN KCUF3 - NEARLY ONE-DIMENSIONAL SPIN-1/2 ANTI-FERROMAGNET

被引：36

作者：

HUTCHINGS, MT ^{[1
]}

IKEDA, H ^{[1
]}

MILNE, JM ^{[1
]}

机构：

[1] OCHANOMIZU UNIV,FAC SCI,DEPT PHYS,TOKYO 112,JAPAN

来源：

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS | 1979年 / 12卷 / 18期

关键词：

D O I：

10.1088/0022-3719/12/18/008

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using inelastic neutron scattering techniques, the spin wave energy dispersion in the (010) plane of the distorted perovskite KCuF3, which exhibits many magnetic properties of the spin-1/2 one-dimensional antiferromagnet, has been investigated at 4.7K (T N=39K). The measurements confirm the very strong exchange interaction between the spins in the (001) direction, and show that in this direction the expression for the excitation energies of the spin-1/2 antiferromagnetic chain given by des Cloizeaux and Pearson (1962) is obeyed. The exchange interaction between these chains is found to be only 1.6% of that within the chains.

引用

页码：L739 / L744

页数：6

共 19 条

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